Finding the Fourth Proportional to 438.19, 657.35 and 149.69
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Solution
The fourth proportional to 438.19, 657.35 and 149.69 is: 224.56
Step by Step Solution
- Step 1: Write the proportion equation
438.19 : 657.35 = 149.69 : x - Step 2: Convert to fraction form
438.19/657.35 = 149.69/x - Step 3: Cross multiply
438.19x = 657.35 × 149.69 - Step 4: Simplify right side
438.19x = 98,400.18 - Step 5: Solve for x
x = 98,400.18/438.19 - Step 6: Final answer
x = 224.56
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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.