Finding the Fourth Proportional to 432.54, 648.86 and 143.98
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Solution
The fourth proportional to 432.54, 648.86 and 143.98 is: 215.99
Step by Step Solution
- Step 1: Write the proportion equation
432.54 : 648.86 = 143.98 : x - Step 2: Convert to fraction form
432.54/648.86 = 143.98/x - Step 3: Cross multiply
432.54x = 648.86 × 143.98 - Step 4: Simplify right side
432.54x = 93,422.86 - Step 5: Solve for x
x = 93,422.86/432.54 - Step 6: Final answer
x = 215.99
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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.