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Finding the Fourth Proportional to 169.48, 254.40 and 82.96

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Solution

The fourth proportional to 169.48, 254.40 and 82.96 is: 124.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.48 : 254.40 = 82.96 : x
  2. Step 2: Convert to fraction form
    169.48/254.40 = 82.96/x
  3. Step 3: Cross multiply
    169.48x = 254.40 × 82.96
  4. Step 4: Simplify right side
    169.48x = 21,105.02
  5. Step 5: Solve for x
    x = 21,105.02/169.48
  6. Step 6: Final answer
    x = 124.53

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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.