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Finding the Third Proportional to 333.28 and 518.48

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Solution

The third proportional to 333.28 and 518.48 is: 806.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    333.28 : 518.48 = 518.48 : x
  2. Step 2: Convert to fraction form
    333.28/518.48 = 518.48/x
  3. Step 3: Cross multiply
    333.28x = 518.48 × 518.48
  4. Step 4: Simplify right side
    333.28x = 268,826.05
  5. Step 5: Solve for x
    x = 268,826.05/333.28
  6. Step 6: Final answer
    x = 806.60

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.