Finding the Fourth Proportional to 432.74, 649.19 and 140.19
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Solution
The fourth proportional to 432.74, 649.19 and 140.19 is: 210.31
Step by Step Solution
- Step 1: Write the proportion equation
432.74 : 649.19 = 140.19 : x - Step 2: Convert to fraction form
432.74/649.19 = 140.19/x - Step 3: Cross multiply
432.74x = 649.19 × 140.19 - Step 4: Simplify right side
432.74x = 91,007.92 - Step 5: Solve for x
x = 91,007.92/432.74 - Step 6: Final answer
x = 210.31
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.