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Finding the Fourth Proportional to 144.59, 216.61 and 104.02

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Solution

The fourth proportional to 144.59, 216.61 and 104.02 is: 155.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.59 : 216.61 = 104.02 : x
  2. Step 2: Convert to fraction form
    144.59/216.61 = 104.02/x
  3. Step 3: Cross multiply
    144.59x = 216.61 × 104.02
  4. Step 4: Simplify right side
    144.59x = 22,530.97
  5. Step 5: Solve for x
    x = 22,530.97/144.59
  6. Step 6: Final answer
    x = 155.83

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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.