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Finding the Fourth Proportional to 432.52, 648.24 and 216.16

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Solution

The fourth proportional to 432.52, 648.24 and 216.16 is: 323.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    432.52 : 648.24 = 216.16 : x
  2. Step 2: Convert to fraction form
    432.52/648.24 = 216.16/x
  3. Step 3: Cross multiply
    432.52x = 648.24 × 216.16
  4. Step 4: Simplify right side
    432.52x = 140,121.13
  5. Step 5: Solve for x
    x = 140,121.13/432.52
  6. Step 6: Final answer
    x = 323.97

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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.