關於
Use the Rule of Three Calculator for proportion problems.
What is the Rule of Three?
The Rule of Three is a method for solving proportion equations with one unknown value. It is commonly used in pricing, recipes, scaling measurements, and percentage-style comparisons.
Direct and inverse proportion
直接比例意味着数值一起增长或缩小。反比例意味着一个值增长而另一个值减少。此工具支持这两种模式。
何时使用
- 从已知单位关系中找到总价格。
- 按比例放大或缩小成分数量。
- 在反比条件下估算数量。