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Finding the Fourth Proportional to 269.37, 371.65 and 239.97

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Solution

The fourth proportional to 269.37, 371.65 and 239.97 is: 331.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.37 : 371.65 = 239.97 : x
  2. Step 2: Convert to fraction form
    269.37/371.65 = 239.97/x
  3. Step 3: Cross multiply
    269.37x = 371.65 × 239.97
  4. Step 4: Simplify right side
    269.37x = 89,184.85
  5. Step 5: Solve for x
    x = 89,184.85/269.37
  6. Step 6: Final answer
    x = 331.09

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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.