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Finding the Fourth Proportional to 241.68, 361.76 and 133.20

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Solution

The fourth proportional to 241.68, 361.76 and 133.20 is: 199.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    241.68 : 361.76 = 133.20 : x
  2. Step 2: Convert to fraction form
    241.68/361.76 = 133.20/x
  3. Step 3: Cross multiply
    241.68x = 361.76 × 133.20
  4. Step 4: Simplify right side
    241.68x = 48,186.43
  5. Step 5: Solve for x
    x = 48,186.43/241.68
  6. Step 6: Final answer
    x = 199.38

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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.