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Finding the Fourth Proportional to 484.97, 726.62 and 289.76

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Solution

The fourth proportional to 484.97, 726.62 and 289.76 is: 434.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.97 : 726.62 = 289.76 : x
  2. Step 2: Convert to fraction form
    484.97/726.62 = 289.76/x
  3. Step 3: Cross multiply
    484.97x = 726.62 × 289.76
  4. Step 4: Simplify right side
    484.97x = 210,540.33
  5. Step 5: Solve for x
    x = 210,540.33/484.97
  6. Step 6: Final answer
    x = 434.14

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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.