Question

Write and solve a proportion to find the height of the taller tree in the diagram at right

Answer 1

@abb1"t

Answer 2

well the 2 triangles formed by the tree and ground are similar.




Which means that the ratio of the corresponding sides are the same.

so compare the ratio of the grounds with the ratio of tree heights.

to make things easier, keep the information for the triangle with the unknown
height in the numerator of both.

so then \[\frac{h}{18} = \frac{42}{20}\]

now solve for h