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Finding the Third Proportional to 878.77 and 1,277.02

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Solution

The third proportional to 878.77 and 1,277.02 is: 1,855.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    878.77 : 1,277.02 = 1,277.02 : x
  2. Step 2: Convert to fraction form
    878.77/1,277.02 = 1,277.02/x
  3. Step 3: Cross multiply
    878.77x = 1,277.02 × 1,277.02
  4. Step 4: Simplify right side
    878.77x = 1,630,768.91
  5. Step 5: Solve for x
    x = 1,630,768.91/878.77
  6. Step 6: Final answer
    x = 1,855.75

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.