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Finding the Fourth Proportional to 361.53, 541.49 and 239.63

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Solution

The fourth proportional to 361.53, 541.49 and 239.63 is: 358.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.53 : 541.49 = 239.63 : x
  2. Step 2: Convert to fraction form
    361.53/541.49 = 239.63/x
  3. Step 3: Cross multiply
    361.53x = 541.49 × 239.63
  4. Step 4: Simplify right side
    361.53x = 129,753.34
  5. Step 5: Solve for x
    x = 129,753.34/361.53
  6. Step 6: Final answer
    x = 358.90

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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.