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Finding the Fourth Proportional to 95.29, 131.58 and 67.78

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Solution

The fourth proportional to 95.29, 131.58 and 67.78 is: 93.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.29 : 131.58 = 67.78 : x
  2. Step 2: Convert to fraction form
    95.29/131.58 = 67.78/x
  3. Step 3: Cross multiply
    95.29x = 131.58 × 67.78
  4. Step 4: Simplify right side
    95.29x = 8,918.49
  5. Step 5: Solve for x
    x = 8,918.49/95.29
  6. Step 6: Final answer
    x = 93.59

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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.