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Finding the Third Proportional to 239.13 and 514.72

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Solution

The third proportional to 239.13 and 514.72 is: 1,107.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.13 : 514.72 = 514.72 : x
  2. Step 2: Convert to fraction form
    239.13/514.72 = 514.72/x
  3. Step 3: Cross multiply
    239.13x = 514.72 × 514.72
  4. Step 4: Simplify right side
    239.13x = 264,935.39
  5. Step 5: Solve for x
    x = 264,935.39/239.13
  6. Step 6: Final answer
    x = 1,107.94

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.