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Finding the Third Proportional to 731.21 and 1,628.54

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Solution

The third proportional to 731.21 and 1,628.54 is: 3,627.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    731.21 : 1,628.54 = 1,628.54 : x
  2. Step 2: Convert to fraction form
    731.21/1,628.54 = 1,628.54/x
  3. Step 3: Cross multiply
    731.21x = 1,628.54 × 1,628.54
  4. Step 4: Simplify right side
    731.21x = 2,652,152.20
  5. Step 5: Solve for x
    x = 2,652,152.20/731.21
  6. Step 6: Final answer
    x = 3,627.05

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Why These Related Problems?

These problems maintain the same ratio (2.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.