Finding the Fourth Proportional to 438.68, 657.72 and 207.44
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Solution
The fourth proportional to 438.68, 657.72 and 207.44 is: 311.02
Step by Step Solution
- Step 1: Write the proportion equation
438.68 : 657.72 = 207.44 : x - Step 2: Convert to fraction form
438.68/657.72 = 207.44/x - Step 3: Cross multiply
438.68x = 657.72 × 207.44 - Step 4: Simplify right side
438.68x = 136,437.44 - Step 5: Solve for x
x = 136,437.44/438.68 - Step 6: Final answer
x = 311.02
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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.