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Finding the Fourth Proportional to 241.99, 333.94 and 143.78

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Solution

The fourth proportional to 241.99, 333.94 and 143.78 is: 198.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    241.99 : 333.94 = 143.78 : x
  2. Step 2: Convert to fraction form
    241.99/333.94 = 143.78/x
  3. Step 3: Cross multiply
    241.99x = 333.94 × 143.78
  4. Step 4: Simplify right side
    241.99x = 48,013.89
  5. Step 5: Solve for x
    x = 48,013.89/241.99
  6. Step 6: Final answer
    x = 198.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.