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Finding the Third Proportional to 653.38 and 827.75

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Solution

The third proportional to 653.38 and 827.75 is: 1,048.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.38 : 827.75 = 827.75 : x
  2. Step 2: Convert to fraction form
    653.38/827.75 = 827.75/x
  3. Step 3: Cross multiply
    653.38x = 827.75 × 827.75
  4. Step 4: Simplify right side
    653.38x = 685,170.06
  5. Step 5: Solve for x
    x = 685,170.06/653.38
  6. Step 6: Final answer
    x = 1,048.66

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Why These Related Problems?

These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.