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Finding the Fourth Proportional to 249.72, 344.61 and 146.22

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Solution

The fourth proportional to 249.72, 344.61 and 146.22 is: 201.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.72 : 344.61 = 146.22 : x
  2. Step 2: Convert to fraction form
    249.72/344.61 = 146.22/x
  3. Step 3: Cross multiply
    249.72x = 344.61 × 146.22
  4. Step 4: Simplify right side
    249.72x = 50,388.87
  5. Step 5: Solve for x
    x = 50,388.87/249.72
  6. Step 6: Final answer
    x = 201.78

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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.