Finding the Fourth Proportional to 418.12, 627.11 and 129.53
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Solution
The fourth proportional to 418.12, 627.11 and 129.53 is: 194.28
Step by Step Solution
- Step 1: Write the proportion equation
418.12 : 627.11 = 129.53 : x - Step 2: Convert to fraction form
418.12/627.11 = 129.53/x - Step 3: Cross multiply
418.12x = 627.11 × 129.53 - Step 4: Simplify right side
418.12x = 81,230.96 - Step 5: Solve for x
x = 81,230.96/418.12 - Step 6: Final answer
x = 194.28
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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.