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Finding the Fourth Proportional to 269.97, 372.56 and 187.05

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Solution

The fourth proportional to 269.97, 372.56 and 187.05 is: 258.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.97 : 372.56 = 187.05 : x
  2. Step 2: Convert to fraction form
    269.97/372.56 = 187.05/x
  3. Step 3: Cross multiply
    269.97x = 372.56 × 187.05
  4. Step 4: Simplify right side
    269.97x = 69,686.41
  5. Step 5: Solve for x
    x = 69,686.41/269.97
  6. Step 6: Final answer
    x = 258.13

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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.