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Finding the Third Proportional to 614.50 and 1,320.50

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Solution

The third proportional to 614.50 and 1,320.50 is: 2,837.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.50 : 1,320.50 = 1,320.50 : x
  2. Step 2: Convert to fraction form
    614.50/1,320.50 = 1,320.50/x
  3. Step 3: Cross multiply
    614.50x = 1,320.50 × 1,320.50
  4. Step 4: Simplify right side
    614.50x = 1,743,720.25
  5. Step 5: Solve for x
    x = 1,743,720.25/614.50
  6. Step 6: Final answer
    x = 2,837.62

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.