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Finding the Third Proportional to 351.56 and 620.44

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Solution

The third proportional to 351.56 and 620.44 is: 1,094.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.56 : 620.44 = 620.44 : x
  2. Step 2: Convert to fraction form
    351.56/620.44 = 620.44/x
  3. Step 3: Cross multiply
    351.56x = 620.44 × 620.44
  4. Step 4: Simplify right side
    351.56x = 384,942.69
  5. Step 5: Solve for x
    x = 384,942.69/351.56
  6. Step 6: Final answer
    x = 1,094.95

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Why These Related Problems?

These problems maintain the same ratio (1.76) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.