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Finding the Fourth Proportional to 253.82, 380.43 and 132.03

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Solution

The fourth proportional to 253.82, 380.43 and 132.03 is: 197.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.82 : 380.43 = 132.03 : x
  2. Step 2: Convert to fraction form
    253.82/380.43 = 132.03/x
  3. Step 3: Cross multiply
    253.82x = 380.43 × 132.03
  4. Step 4: Simplify right side
    253.82x = 50,228.17
  5. Step 5: Solve for x
    x = 50,228.17/253.82
  6. Step 6: Final answer
    x = 197.89

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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.