Finding the Fourth Proportional to 438.11, 657.32 and 207.18
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Solution
The fourth proportional to 438.11, 657.32 and 207.18 is: 310.84
Step by Step Solution
- Step 1: Write the proportion equation
438.11 : 657.32 = 207.18 : x - Step 2: Convert to fraction form
438.11/657.32 = 207.18/x - Step 3: Cross multiply
438.11x = 657.32 × 207.18 - Step 4: Simplify right side
438.11x = 136,183.56 - Step 5: Solve for x
x = 136,183.56/438.11 - Step 6: Final answer
x = 310.84
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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.