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Finding the Fourth Proportional to 361.04, 540.74 and 239.12

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Solution

The fourth proportional to 361.04, 540.74 and 239.12 is: 358.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.04 : 540.74 = 239.12 : x
  2. Step 2: Convert to fraction form
    361.04/540.74 = 239.12/x
  3. Step 3: Cross multiply
    361.04x = 540.74 × 239.12
  4. Step 4: Simplify right side
    361.04x = 129,301.75
  5. Step 5: Solve for x
    x = 129,301.75/361.04
  6. Step 6: Final answer
    x = 358.14

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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.