Which of the following shifts are incorrect?

A right triangle has side lengths of , , and . A similar right triangle has sides of , , and . What is ?

Corresponding sides of two triangles have measures of and . If another side of the small triangle is , what is the value of the bigger triangles corresponding side?

Which set of the following triangle dimensions does NOT have the same proportions as a 3-4-5 triangle?

These triangles are similar. Use this to solve for x:

These two triangles are similar. Solve for x: