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Finding the Third Proportional to 989.06 and 1,531.41

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Solution

The third proportional to 989.06 and 1,531.41 is: 2,371.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    989.06 : 1,531.41 = 1,531.41 : x
  2. Step 2: Convert to fraction form
    989.06/1,531.41 = 1,531.41/x
  3. Step 3: Cross multiply
    989.06x = 1,531.41 × 1,531.41
  4. Step 4: Simplify right side
    989.06x = 2,345,205.10
  5. Step 5: Solve for x
    x = 2,345,205.10/989.06
  6. Step 6: Final answer
    x = 2,371.14

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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.