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Finding the Fourth Proportional to 178.03, 267.13 and 69.80

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Solution

The fourth proportional to 178.03, 267.13 and 69.80 is: 104.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    178.03 : 267.13 = 69.80 : x
  2. Step 2: Convert to fraction form
    178.03/267.13 = 69.80/x
  3. Step 3: Cross multiply
    178.03x = 267.13 × 69.80
  4. Step 4: Simplify right side
    178.03x = 18,644.53
  5. Step 5: Solve for x
    x = 18,644.53/178.03
  6. Step 6: Final answer
    x = 104.73

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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.