Finding the Fourth Proportional to 432.42, 648.72 and 140.00
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Solution
The fourth proportional to 432.42, 648.72 and 140.00 is: 210.02
Step by Step Solution
- Step 1: Write the proportion equation
432.42 : 648.72 = 140.00 : x - Step 2: Convert to fraction form
432.42/648.72 = 140.00/x - Step 3: Cross multiply
432.42x = 648.72 × 140.00 - Step 4: Simplify right side
432.42x = 90,818.19 - Step 5: Solve for x
x = 90,818.19/432.42 - Step 6: Final answer
x = 210.02
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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.