What proportion means
What proportion means
Proportion compares quantities that change together in a multiplicative way. If one quantity is multiplied by a factor, the other follows a predictable rule too.
Step-by-step lessons on Edexcel IGCSE Maths Direct and Inverse Proportion. Each one builds up to exam-style questions. Build confidence with the shared Foundation-tier content first, since roughly 40% of Higher-tier marks are targeted at the grades 4–5 boundary that both tiers have in common.