How far from the screen should the projector be placed?

A saeen is 144 in (3658 mm) wide and the throw ratio is 2.3:1.

How far from the screen should the projector be placed?
A . 288 In (7303 mm)
B . 302 in (7681 mm)
C . 331 in (8413 mm)
D . 446 in (11339 mm)

View Answer

Answer: C

Explanation:

The throw distance of a projector can be calculated using the throw ratio formula: Throw​Distance=Throw​Ratio×Screen Widthtext{Throw Distance} = text{Throw Ratio} times text{Screen Width}Throw Distance=Throw Ratio×Screen Width

Given: Throw Ratio=2.3text{Throw Ratio} = 2.3Throw Ratio=2.3 Screen Width=144 intext{Screen Width} = 144 text{ in}Screen Width=144​in

Throw​Distance=2.3×144text{Throw Distance} = 2.3 times 144Throw Distance=2.3×144

Throw​Distance=331.2 intext{Throw Distance} = 331.2 text{ in}Throw Distance=331.2 in

Therefore, the projector should be placed approximately 331 inches (8413 mm) from the screen.