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Finding the Third Proportional to 353.81 and 547.31

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Solution

The third proportional to 353.81 and 547.31 is: 846.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.81 : 547.31 = 547.31 : x
  2. Step 2: Convert to fraction form
    353.81/547.31 = 547.31/x
  3. Step 3: Cross multiply
    353.81x = 547.31 × 547.31
  4. Step 4: Simplify right side
    353.81x = 299,550.97
  5. Step 5: Solve for x
    x = 299,550.97/353.81
  6. Step 6: Final answer
    x = 846.64

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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.