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Finding the Fourth Proportional to 96.88, 144.65 and 84.73

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Solution

The fourth proportional to 96.88, 144.65 and 84.73 is: 126.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.88 : 144.65 = 84.73 : x
  2. Step 2: Convert to fraction form
    96.88/144.65 = 84.73/x
  3. Step 3: Cross multiply
    96.88x = 144.65 × 84.73
  4. Step 4: Simplify right side
    96.88x = 12,256.19
  5. Step 5: Solve for x
    x = 12,256.19/96.88
  6. Step 6: Final answer
    x = 126.51

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.