Finding the Fourth Proportional to 438.18, 657.02 and 178.31
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Solution
The fourth proportional to 438.18, 657.02 and 178.31 is: 267.35
Step by Step Solution
- Step 1: Write the proportion equation
438.18 : 657.02 = 178.31 : x - Step 2: Convert to fraction form
438.18/657.02 = 178.31/x - Step 3: Cross multiply
438.18x = 657.02 × 178.31 - Step 4: Simplify right side
438.18x = 117,149.06 - Step 5: Solve for x
x = 117,149.06/438.18 - Step 6: Final answer
x = 267.35
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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.