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Finding the Fourth Proportional to 361.27, 498.54 and 201.76

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Solution

The fourth proportional to 361.27, 498.54 and 201.76 is: 278.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.27 : 498.54 = 201.76 : x
  2. Step 2: Convert to fraction form
    361.27/498.54 = 201.76/x
  3. Step 3: Cross multiply
    361.27x = 498.54 × 201.76
  4. Step 4: Simplify right side
    361.27x = 100,584.18
  5. Step 5: Solve for x
    x = 100,584.18/361.27
  6. Step 6: Final answer
    x = 278.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.