A ramp that is 4 ft., 3 ft.at one end. I want a 30% slope to the ground; how long should the ramp be?

To determine the length of the ramp needed, we can use the formula:

Length of ramp = (Height of ramp) / (Slope percentage)

In this case, the slope percentage is given as 30%, which can be represented as a decimal as 0.30. The height of the ramp can be calculated by finding the difference in height between the two ends of the ramp.

Height of ramp = (Height at the taller end) - (Height at the shorter end)
= 4 ft - 3 ft
= 1 ft

Plugging these values into the formula:

Length of ramp = 1 ft / 0.30
= 3.33 ft

Therefore, the ramp should be approximately 3.33 ft long to achieve a 30% slope to the ground.