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Finding the Fourth Proportional to 144.76, 200.65 and 142.44

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Solution

The fourth proportional to 144.76, 200.65 and 142.44 is: 197.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.76 : 200.65 = 142.44 : x
  2. Step 2: Convert to fraction form
    144.76/200.65 = 142.44/x
  3. Step 3: Cross multiply
    144.76x = 200.65 × 142.44
  4. Step 4: Simplify right side
    144.76x = 28,580.59
  5. Step 5: Solve for x
    x = 28,580.59/144.76
  6. Step 6: Final answer
    x = 197.43

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.