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Finding the Third Proportional to 339.19 and 766.76

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Solution

The third proportional to 339.19 and 766.76 is: 1,733.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.19 : 766.76 = 766.76 : x
  2. Step 2: Convert to fraction form
    339.19/766.76 = 766.76/x
  3. Step 3: Cross multiply
    339.19x = 766.76 × 766.76
  4. Step 4: Simplify right side
    339.19x = 587,917.54
  5. Step 5: Solve for x
    x = 587,917.54/339.19
  6. Step 6: Final answer
    x = 1,733.31

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Why These Related Problems?

These problems maintain the same ratio (2.26) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.