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Finding the Third Proportional to 719.44 and 766.88

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Solution

The third proportional to 719.44 and 766.88 is: 817.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    719.44 : 766.88 = 766.88 : x
  2. Step 2: Convert to fraction form
    719.44/766.88 = 766.88/x
  3. Step 3: Cross multiply
    719.44x = 766.88 × 766.88
  4. Step 4: Simplify right side
    719.44x = 588,097.27
  5. Step 5: Solve for x
    x = 588,097.27/719.44
  6. Step 6: Final answer
    x = 817.44

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Why These Related Problems?

These problems maintain the same ratio (1.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.