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Finding the Third Proportional to 398.75 and 932

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Solution

The third proportional to 398.75 and 932 is: 2,178.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.75 : 932 = 932 : x
  2. Step 2: Convert to fraction form
    398.75/932 = 932/x
  3. Step 3: Cross multiply
    398.75x = 932 × 932
  4. Step 4: Simplify right side
    398.75x = 868,624
  5. Step 5: Solve for x
    x = 868,624/398.75
  6. Step 6: Final answer
    x = 2,178.37

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Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.