Geometric mean — Geometry, what it means and where it is taught
For a, x, b in proportion, x = √ab.
Taught in Geometry.
Where it is taught
Practise this idea
1 question in the course bank use Geometric mean, in Similarity & Proportionality.
Problem 1
Find the geometric mean of 4 and 25.
Worked answer
10
√4 × 25 = √100
= 10