Answer: 14 in. , 21 in. , 14 in. , and 48 in.
Explanation:
Given : The perimeter of the trapezoid = 97 inches
The sides of the trapezoid are x in., 1.5x in. , x in. ,and (3.5x-1) in.
We know that the perimeter of any polygon is the sum of all sides.
Thus,

Substitute the value of x in the sides of the trapezoid, we get the sides of trapezoid as

Hence, the lengths of the sides of the trapezoid are 14 in. , 21 in. , 14 in. , and 48 in.