Finding the Fourth Proportional to 438.76, 657.18 and 352.68
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Solution
The fourth proportional to 438.76, 657.18 and 352.68 is: 528.25
Step by Step Solution
- Step 1: Write the proportion equation
438.76 : 657.18 = 352.68 : x - Step 2: Convert to fraction form
438.76/657.18 = 352.68/x - Step 3: Cross multiply
438.76x = 657.18 × 352.68 - Step 4: Simplify right side
438.76x = 231,774.24 - Step 5: Solve for x
x = 231,774.24/438.76 - Step 6: Final answer
x = 528.25
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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.