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Finding the Fourth Proportional to 269.76, 371.72 and 240.34

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Solution

The fourth proportional to 269.76, 371.72 and 240.34 is: 331.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.76 : 371.72 = 240.34 : x
  2. Step 2: Convert to fraction form
    269.76/371.72 = 240.34/x
  3. Step 3: Cross multiply
    269.76x = 371.72 × 240.34
  4. Step 4: Simplify right side
    269.76x = 89,339.18
  5. Step 5: Solve for x
    x = 89,339.18/269.76
  6. Step 6: Final answer
    x = 331.18

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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.