Finding the Fourth Proportional to 318.63, 477.99 and 102.18
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Solution
The fourth proportional to 318.63, 477.99 and 102.18 is: 153.28
Step by Step Solution
- Step 1: Write the proportion equation
318.63 : 477.99 = 102.18 : x - Step 2: Convert to fraction form
318.63/477.99 = 102.18/x - Step 3: Cross multiply
318.63x = 477.99 × 102.18 - Step 4: Simplify right side
318.63x = 48,841.02 - Step 5: Solve for x
x = 48,841.02/318.63 - Step 6: Final answer
x = 153.28
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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.