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Finding the Fourth Proportional to 270.52, 372.90 and 248.20

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Solution

The fourth proportional to 270.52, 372.90 and 248.20 is: 342.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.52 : 372.90 = 248.20 : x
  2. Step 2: Convert to fraction form
    270.52/372.90 = 248.20/x
  3. Step 3: Cross multiply
    270.52x = 372.90 × 248.20
  4. Step 4: Simplify right side
    270.52x = 92,553.78
  5. Step 5: Solve for x
    x = 92,553.78/270.52
  6. Step 6: Final answer
    x = 342.13

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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.