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Finding the Third Proportional to 672.47 and 1,039.08

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Solution

The third proportional to 672.47 and 1,039.08 is: 1,605.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.47 : 1,039.08 = 1,039.08 : x
  2. Step 2: Convert to fraction form
    672.47/1,039.08 = 1,039.08/x
  3. Step 3: Cross multiply
    672.47x = 1,039.08 × 1,039.08
  4. Step 4: Simplify right side
    672.47x = 1,079,683.35
  5. Step 5: Solve for x
    x = 1,079,683.35/672.47
  6. Step 6: Final answer
    x = 1,605.55

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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.