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Finding the Fourth Proportional to 361.11, 541.19 and 144.44

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Solution

The fourth proportional to 361.11, 541.19 and 144.44 is: 216.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.11 : 541.19 = 144.44 : x
  2. Step 2: Convert to fraction form
    361.11/541.19 = 144.44/x
  3. Step 3: Cross multiply
    361.11x = 541.19 × 144.44
  4. Step 4: Simplify right side
    361.11x = 78,167.14
  5. Step 5: Solve for x
    x = 78,167.14/361.11
  6. Step 6: Final answer
    x = 216.46

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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.