Finding the Fourth Proportional to 318.87, 477.99 and 136.08
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Solution
The fourth proportional to 318.87, 477.99 and 136.08 is: 203.99
Step by Step Solution
- Step 1: Write the proportion equation
318.87 : 477.99 = 136.08 : x - Step 2: Convert to fraction form
318.87/477.99 = 136.08/x - Step 3: Cross multiply
318.87x = 477.99 × 136.08 - Step 4: Simplify right side
318.87x = 65,044.88 - Step 5: Solve for x
x = 65,044.88/318.87 - Step 6: Final answer
x = 203.99
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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.