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Finding the Third Proportional to 681.50 and 943.50

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Solution

The third proportional to 681.50 and 943.50 is: 1,306.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    681.50 : 943.50 = 943.50 : x
  2. Step 2: Convert to fraction form
    681.50/943.50 = 943.50/x
  3. Step 3: Cross multiply
    681.50x = 943.50 × 943.50
  4. Step 4: Simplify right side
    681.50x = 890,192.25
  5. Step 5: Solve for x
    x = 890,192.25/681.50
  6. Step 6: Final answer
    x = 1,306.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.