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Finding the Third Proportional to 243.13 and 533.49

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Solution

The third proportional to 243.13 and 533.49 is: 1,170.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.13 : 533.49 = 533.49 : x
  2. Step 2: Convert to fraction form
    243.13/533.49 = 533.49/x
  3. Step 3: Cross multiply
    243.13x = 533.49 × 533.49
  4. Step 4: Simplify right side
    243.13x = 284,613.91
  5. Step 5: Solve for x
    x = 284,613.91/243.13
  6. Step 6: Final answer
    x = 1,170.65

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.