Final answer:
To solve the proportion using cross multiplication, set up the proportion, cross multiply to find an equation, then solve for x to find the value.
Step-by-step explanation:
To solve a proportion using cross multiplication, follow these steps:
First, set up the proportion (for example, 1 cm/0.5 m = x cm/150 cm).
Then cross multiply to solve for x. (1 * 150 = 0.5 * x).
Simplify the equation to find x (x = 150 * 0.5).
Finally, calculate the value of x (x = 75).
By following these steps, you have used cross multiplication to successfully find the value of x in the proportion.