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Finding the Third Proportional to 552.94 and 855.09

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Solution

The third proportional to 552.94 and 855.09 is: 1,322.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.94 : 855.09 = 855.09 : x
  2. Step 2: Convert to fraction form
    552.94/855.09 = 855.09/x
  3. Step 3: Cross multiply
    552.94x = 855.09 × 855.09
  4. Step 4: Simplify right side
    552.94x = 731,185.32
  5. Step 5: Solve for x
    x = 731,185.32/552.94
  6. Step 6: Final answer
    x = 1,322.37

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.