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Finding the Fourth Proportional to 432.16, 648.11 and 124.04

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Solution

The fourth proportional to 432.16, 648.11 and 124.04 is: 186.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    432.16 : 648.11 = 124.04 : x
  2. Step 2: Convert to fraction form
    432.16/648.11 = 124.04/x
  3. Step 3: Cross multiply
    432.16x = 648.11 × 124.04
  4. Step 4: Simplify right side
    432.16x = 80,393.49
  5. Step 5: Solve for x
    x = 80,393.49/432.16
  6. Step 6: Final answer
    x = 186.03

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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.