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Finding the Fourth Proportional to 432.26, 648.12 and 240.02

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Solution

The fourth proportional to 432.26, 648.12 and 240.02 is: 359.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    432.26 : 648.12 = 240.02 : x
  2. Step 2: Convert to fraction form
    432.26/648.12 = 240.02/x
  3. Step 3: Cross multiply
    432.26x = 648.12 × 240.02
  4. Step 4: Simplify right side
    432.26x = 155,561.76
  5. Step 5: Solve for x
    x = 155,561.76/432.26
  6. Step 6: Final answer
    x = 359.88

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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.