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Finding the Third Proportional to 731.63 and 993.19

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Solution

The third proportional to 731.63 and 993.19 is: 1,348.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    731.63 : 993.19 = 993.19 : x
  2. Step 2: Convert to fraction form
    731.63/993.19 = 993.19/x
  3. Step 3: Cross multiply
    731.63x = 993.19 × 993.19
  4. Step 4: Simplify right side
    731.63x = 986,421.41
  5. Step 5: Solve for x
    x = 986,421.41/731.63
  6. Step 6: Final answer
    x = 1,348.26

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.