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Finding the Fourth Proportional to 241.67, 361.91 and 218.58

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Solution

The fourth proportional to 241.67, 361.91 and 218.58 is: 327.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    241.67 : 361.91 = 218.58 : x
  2. Step 2: Convert to fraction form
    241.67/361.91 = 218.58/x
  3. Step 3: Cross multiply
    241.67x = 361.91 × 218.58
  4. Step 4: Simplify right side
    241.67x = 79,105.19
  5. Step 5: Solve for x
    x = 79,105.19/241.67
  6. Step 6: Final answer
    x = 327.33

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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.