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Finding the Third Proportional to 212.31 and 461.95

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Solution

The third proportional to 212.31 and 461.95 is: 1,005.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    212.31 : 461.95 = 461.95 : x
  2. Step 2: Convert to fraction form
    212.31/461.95 = 461.95/x
  3. Step 3: Cross multiply
    212.31x = 461.95 × 461.95
  4. Step 4: Simplify right side
    212.31x = 213,400.69
  5. Step 5: Solve for x
    x = 213,400.69/212.31
  6. Step 6: Final answer
    x = 1,005.14

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.