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Finding the Third Proportional to 156.75 and 249.88

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Solution

The third proportional to 156.75 and 249.88 is: 398.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    156.75 : 249.88 = 249.88 : x
  2. Step 2: Convert to fraction form
    156.75/249.88 = 249.88/x
  3. Step 3: Cross multiply
    156.75x = 249.88 × 249.88
  4. Step 4: Simplify right side
    156.75x = 62,437.52
  5. Step 5: Solve for x
    x = 62,437.52/156.75
  6. Step 6: Final answer
    x = 398.33

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.