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Finding the Fourth Proportional to 253.82, 380.75 and 132.18

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Solution

The fourth proportional to 253.82, 380.75 and 132.18 is: 198.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.82 : 380.75 = 132.18 : x
  2. Step 2: Convert to fraction form
    253.82/380.75 = 132.18/x
  3. Step 3: Cross multiply
    253.82x = 380.75 × 132.18
  4. Step 4: Simplify right side
    253.82x = 50,327.54
  5. Step 5: Solve for x
    x = 50,327.54/253.82
  6. Step 6: Final answer
    x = 198.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.