Finding the Fourth Proportional to 438.31, 657.36 and 207.14
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Solution
The fourth proportional to 438.31, 657.36 and 207.14 is: 310.66
Step by Step Solution
- Step 1: Write the proportion equation
438.31 : 657.36 = 207.14 : x - Step 2: Convert to fraction form
438.31/657.36 = 207.14/x - Step 3: Cross multiply
438.31x = 657.36 × 207.14 - Step 4: Simplify right side
438.31x = 136,165.55 - Step 5: Solve for x
x = 136,165.55/438.31 - Step 6: Final answer
x = 310.66
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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.