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Finding the Fourth Proportional to 144.52, 199.45 and 82.38

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Solution

The fourth proportional to 144.52, 199.45 and 82.38 is: 113.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.52 : 199.45 = 82.38 : x
  2. Step 2: Convert to fraction form
    144.52/199.45 = 82.38/x
  3. Step 3: Cross multiply
    144.52x = 199.45 × 82.38
  4. Step 4: Simplify right side
    144.52x = 16,431.54
  5. Step 5: Solve for x
    x = 16,431.54/144.52
  6. Step 6: Final answer
    x = 113.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.