Save guides, add subjects and pick up where you left off with your BBC account. Make sure you understand the idea of equivalent ratios, as the skills needed for work on proportion are very similar.

How to Paint a Room Using Math Yes, the golden ratio is the famous one, but the fact that the related phenomena scale across all the metallic ratios could be even more interesting, especially with ...

Inverse proportion occurs when one value increases and the other decreases. For example, more workers on a job would reduce the time to complete the task. They are inversely proportional.