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Finding the Third Proportional to 256.92 and 499.92

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Solution

The third proportional to 256.92 and 499.92 is: 972.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    256.92 : 499.92 = 499.92 : x
  2. Step 2: Convert to fraction form
    256.92/499.92 = 499.92/x
  3. Step 3: Cross multiply
    256.92x = 499.92 × 499.92
  4. Step 4: Simplify right side
    256.92x = 249,921.88
  5. Step 5: Solve for x
    x = 249,921.88/256.92
  6. Step 6: Final answer
    x = 972.75

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.