Ratio and Proportion, Part 1
A ratio compares two quantities; a proportion says two ratios are equal.
In this lesson you will
- Form duplicate, triplicate, sub-duplicate, sub-triplicate, reciprocal and compound ratios
- Test whether four numbers are in proportion and find the fourth proportional
- Find the mean proportional and the third proportional
- Work with numbers in continued proportion
| Idea | Example | Test |
|---|---|---|
| Ratio | divide both terms by | |
| Proportion | ||
| Continued proportion |