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Finding the Third Proportional to 548.44 and 783.09

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Solution

The third proportional to 548.44 and 783.09 is: 1,118.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.44 : 783.09 = 783.09 : x
  2. Step 2: Convert to fraction form
    548.44/783.09 = 783.09/x
  3. Step 3: Cross multiply
    548.44x = 783.09 × 783.09
  4. Step 4: Simplify right side
    548.44x = 613,235.82
  5. Step 5: Solve for x
    x = 613,235.82/548.44
  6. Step 6: Final answer
    x = 1,118.15

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.