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Finding the Third Proportional to 671.91 and 1,005.05

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Solution

The third proportional to 671.91 and 1,005.05 is: 1,503.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.91 : 1,005.05 = 1,005.05 : x
  2. Step 2: Convert to fraction form
    671.91/1,005.05 = 1,005.05/x
  3. Step 3: Cross multiply
    671.91x = 1,005.05 × 1,005.05
  4. Step 4: Simplify right side
    671.91x = 1,010,119.22
  5. Step 5: Solve for x
    x = 1,010,119.22/671.91
  6. Step 6: Final answer
    x = 1,503.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.