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Finding the Third Proportional to 619.75 and 960.13

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Solution

The third proportional to 619.75 and 960.13 is: 1,487.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.75 : 960.13 = 960.13 : x
  2. Step 2: Convert to fraction form
    619.75/960.13 = 960.13/x
  3. Step 3: Cross multiply
    619.75x = 960.13 × 960.13
  4. Step 4: Simplify right side
    619.75x = 921,840.02
  5. Step 5: Solve for x
    x = 921,840.02/619.75
  6. Step 6: Final answer
    x = 1,487.44

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.