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Finding the Third Proportional to 246 and 641.25

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Solution

The third proportional to 246 and 641.25 is: 1,671.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    246 : 641.25 = 641.25 : x
  2. Step 2: Convert to fraction form
    246/641.25 = 641.25/x
  3. Step 3: Cross multiply
    246x = 641.25 × 641.25
  4. Step 4: Simplify right side
    246x = 411,201.56
  5. Step 5: Solve for x
    x = 411,201.56/246
  6. Step 6: Final answer
    x = 1,671.55

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Why These Related Problems?

These problems maintain the same ratio (2.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.