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Finding the Fourth Proportional to 96.09, 144.01 and 90.55

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Solution

The fourth proportional to 96.09, 144.01 and 90.55 is: 135.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.09 : 144.01 = 90.55 : x
  2. Step 2: Convert to fraction form
    96.09/144.01 = 90.55/x
  3. Step 3: Cross multiply
    96.09x = 144.01 × 90.55
  4. Step 4: Simplify right side
    96.09x = 13,040.40
  5. Step 5: Solve for x
    x = 13,040.40/96.09
  6. Step 6: Final answer
    x = 135.72

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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.