Caring for a Philodendron Ring of Fire Variegated (Philodendron hederaceum 'Ring of Fire') involves specific steps to ensure its variegated leaves remain healthy and vibrant. Here are detailed care instructions:

1. Light
   - Bright, indirect light: Place the plant in bright, indirect light. It can tolerate some morning sun or filtered sunlight, but avoid direct afternoon sun, which can scorch the leaves.

2. Watering
   - Moderate watering: Water thoroughly when the top inch of soil feels dry. Ensure that excess water drains away to prevent waterlogging, which can lead to root rot.
   - Less frequent watering in winter: During the winter months, reduce watering frequency as the plant's growth slows.

3. Soil
   - Well-draining soil: Use a well-draining potting mix. A mixture of potting soil, perlite, and orchid bark works well to provide good drainage and aeration.

4. Temperature
   - Moderate temperatures: Keep the plant in a temperature range of 65-80°F (18-27°C). Avoid temperatures below 55°F (13°C), as it can damage the plant.

5. Humidity
   - Average to high humidity: Philodendron Ring of Fire Variegated prefers higher humidity levels but can adapt to average indoor humidity. Increase humidity by misting the plant regularly, using a humidity tray, or placing a humidifier nearby.

6. Fertilizing
   - **Regular feeding**: Feed the plant every 4-6 weeks during the growing season (spring and summer) with a balanced, water-soluble fertilizer diluted to half strength. Reduce feeding in the fall and winter when growth slows.

7. Pruning
   - Regular pruning: Prune to remove any dead or yellowing leaves and to control the plant's size and shape. Pruning also encourages bushier growth. Use clean, sharp scissors or pruning shears.

8. Repotting
   - Repot every 1-2 years: Repot the plant when it becomes root-bound or every 1-2 years to refresh the soil and provide more space for growth. Choose a pot that is slightly larger in diameter than the current one.

9. Propagation
   - *Stem cuttings: Propagate Philodendron Ring of Fire Variegated from stem cuttings. Take a cutting with at least one node and place it in water or directly into moist soil. Keep the cutting in bright, indirect light until roots develop.

10. Pests
    - Common pests: Watch for pests such as spider mites, mealybugs, and aphids. Treat infestations promptly with insecticidal soap or neem oil.

11. Leaf Cleaning
    - Dust removal: Wipe the leaves occasionally with a damp cloth to remove dust and maintain healthy leaf function.

12. Troubleshooting
    - Yellowing leaves: Adjust watering habits and check for root rot. Ensure good drainage to prevent waterlogging.
    - Brown tips: This may indicate underwatering or low humidity. Increase humidity levels and adjust watering frequency.

By following these numbered care instructions, your Philodendron Ring of Fire Variegated should thrive and display its attractive variegated leaves effectively.