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Finding the Fourth Proportional to 249.73, 344.61 and 156.49

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Solution

The fourth proportional to 249.73, 344.61 and 156.49 is: 215.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.73 : 344.61 = 156.49 : x
  2. Step 2: Convert to fraction form
    249.73/344.61 = 156.49/x
  3. Step 3: Cross multiply
    249.73x = 344.61 × 156.49
  4. Step 4: Simplify right side
    249.73x = 53,927.16
  5. Step 5: Solve for x
    x = 53,927.16/249.73
  6. Step 6: Final answer
    x = 215.94

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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.