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Finding the Fourth Proportional to 484.56, 725.90 and 387.24

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Solution

The fourth proportional to 484.56, 725.90 and 387.24 is: 580.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.56 : 725.90 = 387.24 : x
  2. Step 2: Convert to fraction form
    484.56/725.90 = 387.24/x
  3. Step 3: Cross multiply
    484.56x = 725.90 × 387.24
  4. Step 4: Simplify right side
    484.56x = 281,097.52
  5. Step 5: Solve for x
    x = 281,097.52/484.56
  6. Step 6: Final answer
    x = 580.11

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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.