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Finding the Third Proportional to 347.38 and 515.75

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Solution

The third proportional to 347.38 and 515.75 is: 765.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.38 : 515.75 = 515.75 : x
  2. Step 2: Convert to fraction form
    347.38/515.75 = 515.75/x
  3. Step 3: Cross multiply
    347.38x = 515.75 × 515.75
  4. Step 4: Simplify right side
    347.38x = 265,998.06
  5. Step 5: Solve for x
    x = 265,998.06/347.38
  6. Step 6: Final answer
    x = 765.74

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.