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Finding the Third Proportional to 243.88 and 528.94

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Solution

The third proportional to 243.88 and 528.94 is: 1,147.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.88 : 528.94 = 528.94 : x
  2. Step 2: Convert to fraction form
    243.88/528.94 = 528.94/x
  3. Step 3: Cross multiply
    243.88x = 528.94 × 528.94
  4. Step 4: Simplify right side
    243.88x = 279,774.88
  5. Step 5: Solve for x
    x = 279,774.88/243.88
  6. Step 6: Final answer
    x = 1,147.21

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.