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Finding the Fourth Proportional to 174.44, 261.52 and 76.92

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Solution

The fourth proportional to 174.44, 261.52 and 76.92 is: 115.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.44 : 261.52 = 76.92 : x
  2. Step 2: Convert to fraction form
    174.44/261.52 = 76.92/x
  3. Step 3: Cross multiply
    174.44x = 261.52 × 76.92
  4. Step 4: Simplify right side
    174.44x = 20,116.12
  5. Step 5: Solve for x
    x = 20,116.12/174.44
  6. Step 6: Final answer
    x = 115.32

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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.