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Finding the Third Proportional to 436 and 878

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Solution

The third proportional to 436 and 878 is: 1,768.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    436 : 878 = 878 : x
  2. Step 2: Convert to fraction form
    436/878 = 878/x
  3. Step 3: Cross multiply
    436x = 878 × 878
  4. Step 4: Simplify right side
    436x = 770,884
  5. Step 5: Solve for x
    x = 770,884/436
  6. Step 6: Final answer
    x = 1,768.08

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These problems maintain the same ratio (2.01) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.