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Finding the Third Proportional to 247.22 and 521.02

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Solution

The third proportional to 247.22 and 521.02 is: 1,098.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.22 : 521.02 = 521.02 : x
  2. Step 2: Convert to fraction form
    247.22/521.02 = 521.02/x
  3. Step 3: Cross multiply
    247.22x = 521.02 × 521.02
  4. Step 4: Simplify right side
    247.22x = 271,457.28
  5. Step 5: Solve for x
    x = 271,457.28/247.22
  6. Step 6: Final answer
    x = 1,098.04

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.