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Finding the Fourth Proportional to 96.21, 131.90 and 94.62

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Solution

The fourth proportional to 96.21, 131.90 and 94.62 is: 129.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.21 : 131.90 = 94.62 : x
  2. Step 2: Convert to fraction form
    96.21/131.90 = 94.62/x
  3. Step 3: Cross multiply
    96.21x = 131.90 × 94.62
  4. Step 4: Simplify right side
    96.21x = 12,480.46
  5. Step 5: Solve for x
    x = 12,480.46/96.21
  6. Step 6: Final answer
    x = 129.72

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.