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Finding the Third Proportional to 548.16 and 1,251.28

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Solution

The third proportional to 548.16 and 1,251.28 is: 2,856.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.16 : 1,251.28 = 1,251.28 : x
  2. Step 2: Convert to fraction form
    548.16/1,251.28 = 1,251.28/x
  3. Step 3: Cross multiply
    548.16x = 1,251.28 × 1,251.28
  4. Step 4: Simplify right side
    548.16x = 1,565,704.77
  5. Step 5: Solve for x
    x = 1,565,704.77/548.16
  6. Step 6: Final answer
    x = 2,856.31

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Why These Related Problems?

These problems maintain the same ratio (2.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.