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Finding the Fourth Proportional to 269.06, 402.55 and 238.28

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Solution

The fourth proportional to 269.06, 402.55 and 238.28 is: 356.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.06 : 402.55 = 238.28 : x
  2. Step 2: Convert to fraction form
    269.06/402.55 = 238.28/x
  3. Step 3: Cross multiply
    269.06x = 402.55 × 238.28
  4. Step 4: Simplify right side
    269.06x = 95,919.61
  5. Step 5: Solve for x
    x = 95,919.61/269.06
  6. Step 6: Final answer
    x = 356.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.