This exam tips covers Real-World Applications within Proportion for GCSE Mathematics. Revise Proportion in Number for GCSE Mathematics with 12 exam-style questions and 22 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 13 of 15 in this topic. Treat this as a marking guide for what examiners are looking for, not just a fact list.
Topic position
Section 13 of 15
Practice
12 questions
Recall
22 flashcards
Real-World Applications
Direct Proportion Examples
- Distance ∝ Time (constant speed)
- Cost ∝ Quantity (fixed price per unit)
- Perimeter ∝ Side length (similar shapes)
- Wages ∝ Hours worked (hourly rate)
Inverse Proportion Examples
- Speed ∝ 1/Time (fixed distance)
- Workers ∝ 1/Time (fixed job)
- Brightness ∝ 1/Distance² (light intensity)
- Pressure ∝ 1/Volume (gas laws)