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Finding the Third Proportional to 888.31 and 1,390.44

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Solution

The third proportional to 888.31 and 1,390.44 is: 2,176.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.31 : 1,390.44 = 1,390.44 : x
  2. Step 2: Convert to fraction form
    888.31/1,390.44 = 1,390.44/x
  3. Step 3: Cross multiply
    888.31x = 1,390.44 × 1,390.44
  4. Step 4: Simplify right side
    888.31x = 1,933,316.44
  5. Step 5: Solve for x
    x = 1,933,316.44/888.31
  6. Step 6: Final answer
    x = 2,176.39

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.