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Finding the Fourth Proportional to 241.17, 361.89 and 138.54

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Solution

The fourth proportional to 241.17, 361.89 and 138.54 is: 207.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    241.17 : 361.89 = 138.54 : x
  2. Step 2: Convert to fraction form
    241.17/361.89 = 138.54/x
  3. Step 3: Cross multiply
    241.17x = 361.89 × 138.54
  4. Step 4: Simplify right side
    241.17x = 50,136.24
  5. Step 5: Solve for x
    x = 50,136.24/241.17
  6. Step 6: Final answer
    x = 207.89

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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.