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Finding the Fourth Proportional to 484.73, 726.99 and 138.06

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Solution

The fourth proportional to 484.73, 726.99 and 138.06 is: 207.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.73 : 726.99 = 138.06 : x
  2. Step 2: Convert to fraction form
    484.73/726.99 = 138.06/x
  3. Step 3: Cross multiply
    484.73x = 726.99 × 138.06
  4. Step 4: Simplify right side
    484.73x = 100,368.24
  5. Step 5: Solve for x
    x = 100,368.24/484.73
  6. Step 6: Final answer
    x = 207.06

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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.