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Finding the Fourth Proportional to 401.52, 600.96 and 387.24

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Solution

The fourth proportional to 401.52, 600.96 and 387.24 is: 579.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.52 : 600.96 = 387.24 : x
  2. Step 2: Convert to fraction form
    401.52/600.96 = 387.24/x
  3. Step 3: Cross multiply
    401.52x = 600.96 × 387.24
  4. Step 4: Simplify right side
    401.52x = 232,715.75
  5. Step 5: Solve for x
    x = 232,715.75/401.52
  6. Step 6: Final answer
    x = 579.59

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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.