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Finding the Fourth Proportional to 484.13, 726.21 and 137.46

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Solution

The fourth proportional to 484.13, 726.21 and 137.46 is: 206.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.13 : 726.21 = 137.46 : x
  2. Step 2: Convert to fraction form
    484.13/726.21 = 137.46/x
  3. Step 3: Cross multiply
    484.13x = 726.21 × 137.46
  4. Step 4: Simplify right side
    484.13x = 99,824.83
  5. Step 5: Solve for x
    x = 99,824.83/484.13
  6. Step 6: Final answer
    x = 206.20

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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.