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Finding the Fourth Proportional to 241.07, 361.27 and 138.20

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Solution

The fourth proportional to 241.07, 361.27 and 138.20 is: 207.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    241.07 : 361.27 = 138.20 : x
  2. Step 2: Convert to fraction form
    241.07/361.27 = 138.20/x
  3. Step 3: Cross multiply
    241.07x = 361.27 × 138.20
  4. Step 4: Simplify right side
    241.07x = 49,928.07
  5. Step 5: Solve for x
    x = 49,928.07/241.07
  6. Step 6: Final answer
    x = 207.11

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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.