Finding the Fourth Proportional to 438.60, 657.92 and 113.99
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Solution
The fourth proportional to 438.60, 657.92 and 113.99 is: 170.99
Step by Step Solution
- Step 1: Write the proportion equation
438.60 : 657.92 = 113.99 : x - Step 2: Convert to fraction form
438.60/657.92 = 113.99/x - Step 3: Cross multiply
438.60x = 657.92 × 113.99 - Step 4: Simplify right side
438.60x = 74,996.30 - Step 5: Solve for x
x = 74,996.30/438.60 - Step 6: Final answer
x = 170.99
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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.