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Finding the Third Proportional to 308.74 and 496.55

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Solution

The third proportional to 308.74 and 496.55 is: 798.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.74 : 496.55 = 496.55 : x
  2. Step 2: Convert to fraction form
    308.74/496.55 = 496.55/x
  3. Step 3: Cross multiply
    308.74x = 496.55 × 496.55
  4. Step 4: Simplify right side
    308.74x = 246,558.80
  5. Step 5: Solve for x
    x = 246,558.80/308.74
  6. Step 6: Final answer
    x = 798.59

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.