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Finding the Fourth Proportional to 118.44, 163.39 and 69.29

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Solution

The fourth proportional to 118.44, 163.39 and 69.29 is: 95.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.44 : 163.39 = 69.29 : x
  2. Step 2: Convert to fraction form
    118.44/163.39 = 69.29/x
  3. Step 3: Cross multiply
    118.44x = 163.39 × 69.29
  4. Step 4: Simplify right side
    118.44x = 11,321.29
  5. Step 5: Solve for x
    x = 11,321.29/118.44
  6. Step 6: Final answer
    x = 95.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.