Help asappp both 16 and 17

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.

The given diagram shows the parts of a right triangle with an altitude to the hypotenuse. using the two given  measures, find the other four.

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?