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Finding the Fourth Proportional to 270.27, 372.47 and 231.39

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Solution

The fourth proportional to 270.27, 372.47 and 231.39 is: 318.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.27 : 372.47 = 231.39 : x
  2. Step 2: Convert to fraction form
    270.27/372.47 = 231.39/x
  3. Step 3: Cross multiply
    270.27x = 372.47 × 231.39
  4. Step 4: Simplify right side
    270.27x = 86,184.68
  5. Step 5: Solve for x
    x = 86,184.68/270.27
  6. Step 6: Final answer
    x = 318.88

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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.