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Finding the Fourth Proportional to 95.66, 131.89 and 69.47

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Solution

The fourth proportional to 95.66, 131.89 and 69.47 is: 95.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.66 : 131.89 = 69.47 : x
  2. Step 2: Convert to fraction form
    95.66/131.89 = 69.47/x
  3. Step 3: Cross multiply
    95.66x = 131.89 × 69.47
  4. Step 4: Simplify right side
    95.66x = 9,162.22
  5. Step 5: Solve for x
    x = 9,162.22/95.66
  6. Step 6: Final answer
    x = 95.78

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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.