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Finding the Fourth Proportional to 96.59, 145.02 and 89.57

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Solution

The fourth proportional to 96.59, 145.02 and 89.57 is: 134.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.59 : 145.02 = 89.57 : x
  2. Step 2: Convert to fraction form
    96.59/145.02 = 89.57/x
  3. Step 3: Cross multiply
    96.59x = 145.02 × 89.57
  4. Step 4: Simplify right side
    96.59x = 12,989.44
  5. Step 5: Solve for x
    x = 12,989.44/96.59
  6. Step 6: Final answer
    x = 134.48

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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.