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Finding the Fourth Proportional to 241.17, 361.14 and 221.11

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Solution

The fourth proportional to 241.17, 361.14 and 221.11 is: 331.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    241.17 : 361.14 = 221.11 : x
  2. Step 2: Convert to fraction form
    241.17/361.14 = 221.11/x
  3. Step 3: Cross multiply
    241.17x = 361.14 × 221.11
  4. Step 4: Simplify right side
    241.17x = 79,851.67
  5. Step 5: Solve for x
    x = 79,851.67/241.17
  6. Step 6: Final answer
    x = 331.10

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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.