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Finding the Fourth Proportional to 270.48, 372.96 and 248.88

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Solution

The fourth proportional to 270.48, 372.96 and 248.88 is: 343.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.48 : 372.96 = 248.88 : x
  2. Step 2: Convert to fraction form
    270.48/372.96 = 248.88/x
  3. Step 3: Cross multiply
    270.48x = 372.96 × 248.88
  4. Step 4: Simplify right side
    270.48x = 92,822.28
  5. Step 5: Solve for x
    x = 92,822.28/270.48
  6. Step 6: Final answer
    x = 343.18

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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.