Four more than one third a number into a variable expression or an equation

Four more than one third a number into a variable expression

Let the number be x

One third can be written as a fraction one out of 3 that is  

one third of a number is   * x

four more means we add 4

So , Four more than one third a number represents the expression

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6