Question

Find the mean proportion between 6.25 and 1.6.

Answer 1

The mean proportion between two numbers $$a$$ and $$b$$ is given by $$\sqrt{ab}$$.

$$\sqrt{6.25 \times 1.6} = \sqrt{10} \approx 3.162$$

or $$\sqrt{\frac{625}{100} \times \frac{16}{10}} = \sqrt{\frac{10000}{1000}} = \sqrt{10}$$