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Finding the Fourth Proportional to 96.71, 144.29 and 89.46

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Solution

The fourth proportional to 96.71, 144.29 and 89.46 is: 133.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.71 : 144.29 = 89.46 : x
  2. Step 2: Convert to fraction form
    96.71/144.29 = 89.46/x
  3. Step 3: Cross multiply
    96.71x = 144.29 × 89.46
  4. Step 4: Simplify right side
    96.71x = 12,908.41
  5. Step 5: Solve for x
    x = 12,908.41/96.71
  6. Step 6: Final answer
    x = 133.48

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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.