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Finding the Fourth Proportional to 241.26, 361.61 and 87.11

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Solution

The fourth proportional to 241.26, 361.61 and 87.11 is: 130.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    241.26 : 361.61 = 87.11 : x
  2. Step 2: Convert to fraction form
    241.26/361.61 = 87.11/x
  3. Step 3: Cross multiply
    241.26x = 361.61 × 87.11
  4. Step 4: Simplify right side
    241.26x = 31,497.60
  5. Step 5: Solve for x
    x = 31,497.60/241.26
  6. Step 6: Final answer
    x = 130.55

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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.