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Finding the Third Proportional to 132.26 and 287.30

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Solution

The third proportional to 132.26 and 287.30 is: 624.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.26 : 287.30 = 287.30 : x
  2. Step 2: Convert to fraction form
    132.26/287.30 = 287.30/x
  3. Step 3: Cross multiply
    132.26x = 287.30 × 287.30
  4. Step 4: Simplify right side
    132.26x = 82,539.49
  5. Step 5: Solve for x
    x = 82,539.49/132.26
  6. Step 6: Final answer
    x = 624.08

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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.