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Finding the Fourth Proportional to 94.40, 131.10 and 93.76

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Solution

The fourth proportional to 94.40, 131.10 and 93.76 is: 130.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.40 : 131.10 = 93.76 : x
  2. Step 2: Convert to fraction form
    94.40/131.10 = 93.76/x
  3. Step 3: Cross multiply
    94.40x = 131.10 × 93.76
  4. Step 4: Simplify right side
    94.40x = 12,291.94
  5. Step 5: Solve for x
    x = 12,291.94/94.40
  6. Step 6: Final answer
    x = 130.21

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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.