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Finding the Third Proportional to 281.63 and 610.81

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Solution

The third proportional to 281.63 and 610.81 is: 1,324.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    281.63 : 610.81 = 610.81 : x
  2. Step 2: Convert to fraction form
    281.63/610.81 = 610.81/x
  3. Step 3: Cross multiply
    281.63x = 610.81 × 610.81
  4. Step 4: Simplify right side
    281.63x = 373,091.91
  5. Step 5: Solve for x
    x = 373,091.91/281.63
  6. Step 6: Final answer
    x = 1,324.78

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.