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Finding the Third Proportional to 340.31 and 516.44

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Solution

The third proportional to 340.31 and 516.44 is: 783.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.31 : 516.44 = 516.44 : x
  2. Step 2: Convert to fraction form
    340.31/516.44 = 516.44/x
  3. Step 3: Cross multiply
    340.31x = 516.44 × 516.44
  4. Step 4: Simplify right side
    340.31x = 266,707.69
  5. Step 5: Solve for x
    x = 266,707.69/340.31
  6. Step 6: Final answer
    x = 783.71

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.