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Finding the Fourth Proportional to 249.37, 344.27 and 156.25

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Solution

The fourth proportional to 249.37, 344.27 and 156.25 is: 215.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.37 : 344.27 = 156.25 : x
  2. Step 2: Convert to fraction form
    249.37/344.27 = 156.25/x
  3. Step 3: Cross multiply
    249.37x = 344.27 × 156.25
  4. Step 4: Simplify right side
    249.37x = 53,791.72
  5. Step 5: Solve for x
    x = 53,791.72/249.37
  6. Step 6: Final answer
    x = 215.71

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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.