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Finding the Third Proportional to 195.33 and 287.30

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Solution

The third proportional to 195.33 and 287.30 is: 422.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.33 : 287.30 = 287.30 : x
  2. Step 2: Convert to fraction form
    195.33/287.30 = 287.30/x
  3. Step 3: Cross multiply
    195.33x = 287.30 × 287.30
  4. Step 4: Simplify right side
    195.33x = 82,539.49
  5. Step 5: Solve for x
    x = 82,539.49/195.33
  6. Step 6: Final answer
    x = 422.57

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.