Finding the Fourth Proportional to 157.91, 236.74 and 66.63
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Solution
The fourth proportional to 157.91, 236.74 and 66.63 is: 99.89
Step by Step Solution
- Step 1: Write the proportion equation
157.91 : 236.74 = 66.63 : x - Step 2: Convert to fraction form
157.91/236.74 = 66.63/x - Step 3: Cross multiply
157.91x = 236.74 × 66.63 - Step 4: Simplify right side
157.91x = 15,773.99 - Step 5: Solve for x
x = 15,773.99/157.91 - Step 6: Final answer
x = 99.89
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.