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Finding the Fourth Proportional to 456.88, 630.39 and 270.24

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Solution

The fourth proportional to 456.88, 630.39 and 270.24 is: 372.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.88 : 630.39 = 270.24 : x
  2. Step 2: Convert to fraction form
    456.88/630.39 = 270.24/x
  3. Step 3: Cross multiply
    456.88x = 630.39 × 270.24
  4. Step 4: Simplify right side
    456.88x = 170,356.59
  5. Step 5: Solve for x
    x = 170,356.59/456.88
  6. Step 6: Final answer
    x = 372.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.