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Finding the Fourth Proportional to 484.13, 726.20 and 137.48

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Solution

The fourth proportional to 484.13, 726.20 and 137.48 is: 206.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.13 : 726.20 = 137.48 : x
  2. Step 2: Convert to fraction form
    484.13/726.20 = 137.48/x
  3. Step 3: Cross multiply
    484.13x = 726.20 × 137.48
  4. Step 4: Simplify right side
    484.13x = 99,834.95
  5. Step 5: Solve for x
    x = 99,834.95/484.13
  6. Step 6: Final answer
    x = 206.21

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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.