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Finding the Third Proportional to 685.50 and 1,468.88

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Solution

The third proportional to 685.50 and 1,468.88 is: 3,147.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    685.50 : 1,468.88 = 1,468.88 : x
  2. Step 2: Convert to fraction form
    685.50/1,468.88 = 1,468.88/x
  3. Step 3: Cross multiply
    685.50x = 1,468.88 × 1,468.88
  4. Step 4: Simplify right side
    685.50x = 2,157,593.77
  5. Step 5: Solve for x
    x = 2,157,593.77/685.50
  6. Step 6: Final answer
    x = 3,147.47

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.