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Finding the Fourth Proportional to 94.68, 131.26 and 91.34

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Solution

The fourth proportional to 94.68, 131.26 and 91.34 is: 126.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.68 : 131.26 = 91.34 : x
  2. Step 2: Convert to fraction form
    94.68/131.26 = 91.34/x
  3. Step 3: Cross multiply
    94.68x = 131.26 × 91.34
  4. Step 4: Simplify right side
    94.68x = 11,989.73
  5. Step 5: Solve for x
    x = 11,989.73/94.68
  6. Step 6: Final answer
    x = 126.63

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.