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Finding the Fourth Proportional to 361.27, 540.18 and 278.92

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Solution

The fourth proportional to 361.27, 540.18 and 278.92 is: 417.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.27 : 540.18 = 278.92 : x
  2. Step 2: Convert to fraction form
    361.27/540.18 = 278.92/x
  3. Step 3: Cross multiply
    361.27x = 540.18 × 278.92
  4. Step 4: Simplify right side
    361.27x = 150,665.66
  5. Step 5: Solve for x
    x = 150,665.66/361.27
  6. Step 6: Final answer
    x = 417.05

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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.