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Finding the Third Proportional to 620.44 and 961.88

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Solution

The third proportional to 620.44 and 961.88 is: 1,491.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.44 : 961.88 = 961.88 : x
  2. Step 2: Convert to fraction form
    620.44/961.88 = 961.88/x
  3. Step 3: Cross multiply
    620.44x = 961.88 × 961.88
  4. Step 4: Simplify right side
    620.44x = 925,203.52
  5. Step 5: Solve for x
    x = 925,203.52/620.44
  6. Step 6: Final answer
    x = 1,491.21

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.