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Finding the Third Proportional to 548.44 and 761.81

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Solution

The third proportional to 548.44 and 761.81 is: 1,058.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.44 : 761.81 = 761.81 : x
  2. Step 2: Convert to fraction form
    548.44/761.81 = 761.81/x
  3. Step 3: Cross multiply
    548.44x = 761.81 × 761.81
  4. Step 4: Simplify right side
    548.44x = 580,358.29
  5. Step 5: Solve for x
    x = 580,358.29/548.44
  6. Step 6: Final answer
    x = 1,058.20

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.