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Finding the Fourth Proportional to 96.68, 144.71 and 66.23

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Solution

The fourth proportional to 96.68, 144.71 and 66.23 is: 99.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.68 : 144.71 = 66.23 : x
  2. Step 2: Convert to fraction form
    96.68/144.71 = 66.23/x
  3. Step 3: Cross multiply
    96.68x = 144.71 × 66.23
  4. Step 4: Simplify right side
    96.68x = 9,584.14
  5. Step 5: Solve for x
    x = 9,584.14/96.68
  6. Step 6: Final answer
    x = 99.13

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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.