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Finding the Third Proportional to 771.38 and 1,228.13

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Solution

The third proportional to 771.38 and 1,228.13 is: 1,955.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    771.38 : 1,228.13 = 1,228.13 : x
  2. Step 2: Convert to fraction form
    771.38/1,228.13 = 1,228.13/x
  3. Step 3: Cross multiply
    771.38x = 1,228.13 × 1,228.13
  4. Step 4: Simplify right side
    771.38x = 1,508,291.02
  5. Step 5: Solve for x
    x = 1,508,291.02/771.38
  6. Step 6: Final answer
    x = 1,955.33

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.