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Finding the Third Proportional to 361.50 and 771.25

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Solution

The third proportional to 361.50 and 771.25 is: 1,645.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.50 : 771.25 = 771.25 : x
  2. Step 2: Convert to fraction form
    361.50/771.25 = 771.25/x
  3. Step 3: Cross multiply
    361.50x = 771.25 × 771.25
  4. Step 4: Simplify right side
    361.50x = 594,826.56
  5. Step 5: Solve for x
    x = 594,826.56/361.50
  6. Step 6: Final answer
    x = 1,645.44

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.