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Finding the Fourth Proportional to 96.14, 144.28 and 84.75

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Solution

The fourth proportional to 96.14, 144.28 and 84.75 is: 127.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.14 : 144.28 = 84.75 : x
  2. Step 2: Convert to fraction form
    96.14/144.28 = 84.75/x
  3. Step 3: Cross multiply
    96.14x = 144.28 × 84.75
  4. Step 4: Simplify right side
    96.14x = 12,227.29
  5. Step 5: Solve for x
    x = 12,227.29/96.14
  6. Step 6: Final answer
    x = 127.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.