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Finding the Third Proportional to 617.20 and 965.67

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Solution

The third proportional to 617.20 and 965.67 is: 1,510.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.20 : 965.67 = 965.67 : x
  2. Step 2: Convert to fraction form
    617.20/965.67 = 965.67/x
  3. Step 3: Cross multiply
    617.20x = 965.67 × 965.67
  4. Step 4: Simplify right side
    617.20x = 932,522.17
  5. Step 5: Solve for x
    x = 932,522.17/617.20
  6. Step 6: Final answer
    x = 1,510.88

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.