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Finding the Fourth Proportional to 185.52, 278.20 and 69.96

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Solution

The fourth proportional to 185.52, 278.20 and 69.96 is: 104.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    185.52 : 278.20 = 69.96 : x
  2. Step 2: Convert to fraction form
    185.52/278.20 = 69.96/x
  3. Step 3: Cross multiply
    185.52x = 278.20 × 69.96
  4. Step 4: Simplify right side
    185.52x = 19,462.87
  5. Step 5: Solve for x
    x = 19,462.87/185.52
  6. Step 6: Final answer
    x = 104.91

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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.