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Finding the Fourth Proportional to 241.82, 362.48 and 221.78

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Solution

The fourth proportional to 241.82, 362.48 and 221.78 is: 332.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    241.82 : 362.48 = 221.78 : x
  2. Step 2: Convert to fraction form
    241.82/362.48 = 221.78/x
  3. Step 3: Cross multiply
    241.82x = 362.48 × 221.78
  4. Step 4: Simplify right side
    241.82x = 80,390.81
  5. Step 5: Solve for x
    x = 80,390.81/241.82
  6. Step 6: Final answer
    x = 332.44

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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.