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Finding the Fourth Proportional to 361.19, 541.56 and 144.83

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Solution

The fourth proportional to 361.19, 541.56 and 144.83 is: 217.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.19 : 541.56 = 144.83 : x
  2. Step 2: Convert to fraction form
    361.19/541.56 = 144.83/x
  3. Step 3: Cross multiply
    361.19x = 541.56 × 144.83
  4. Step 4: Simplify right side
    361.19x = 78,434.13
  5. Step 5: Solve for x
    x = 78,434.13/361.19
  6. Step 6: Final answer
    x = 217.15

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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.