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Finding the Fourth Proportional to 169.44, 252.87 and 165.12

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Solution

The fourth proportional to 169.44, 252.87 and 165.12 is: 246.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.44 : 252.87 = 165.12 : x
  2. Step 2: Convert to fraction form
    169.44/252.87 = 165.12/x
  3. Step 3: Cross multiply
    169.44x = 252.87 × 165.12
  4. Step 4: Simplify right side
    169.44x = 41,753.89
  5. Step 5: Solve for x
    x = 41,753.89/169.44
  6. Step 6: Final answer
    x = 246.42

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.