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Finding the Third Proportional to 249.75 and 514.88

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Solution

The third proportional to 249.75 and 514.88 is: 1,061.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.75 : 514.88 = 514.88 : x
  2. Step 2: Convert to fraction form
    249.75/514.88 = 514.88/x
  3. Step 3: Cross multiply
    249.75x = 514.88 × 514.88
  4. Step 4: Simplify right side
    249.75x = 265,096.27
  5. Step 5: Solve for x
    x = 265,096.27/249.75
  6. Step 6: Final answer
    x = 1,061.45

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.