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Finding the Fourth Proportional to 484.68, 726.67 and 311.55

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Solution

The fourth proportional to 484.68, 726.67 and 311.55 is: 467.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.68 : 726.67 = 311.55 : x
  2. Step 2: Convert to fraction form
    484.68/726.67 = 311.55/x
  3. Step 3: Cross multiply
    484.68x = 726.67 × 311.55
  4. Step 4: Simplify right side
    484.68x = 226,391.70
  5. Step 5: Solve for x
    x = 226,391.70/484.68
  6. Step 6: Final answer
    x = 467.09

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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.