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Finding the Third Proportional to 619 and 751.75

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Solution

The third proportional to 619 and 751.75 is: 912.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    619 : 751.75 = 751.75 : x
  2. Step 2: Convert to fraction form
    619/751.75 = 751.75/x
  3. Step 3: Cross multiply
    619x = 751.75 × 751.75
  4. Step 4: Simplify right side
    619x = 565,128.06
  5. Step 5: Solve for x
    x = 565,128.06/619
  6. Step 6: Final answer
    x = 912.97

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Why These Related Problems?

These problems maintain the same ratio (1.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.