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Finding the Fourth Proportional to 94.74, 140.17 and 94.47

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Solution

The fourth proportional to 94.74, 140.17 and 94.47 is: 139.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.74 : 140.17 = 94.47 : x
  2. Step 2: Convert to fraction form
    94.74/140.17 = 94.47/x
  3. Step 3: Cross multiply
    94.74x = 140.17 × 94.47
  4. Step 4: Simplify right side
    94.74x = 13,241.86
  5. Step 5: Solve for x
    x = 13,241.86/94.74
  6. Step 6: Final answer
    x = 139.77

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.