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Finding the Fourth Proportional to 263.05, 362.22 and 221.43

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Solution

The fourth proportional to 263.05, 362.22 and 221.43 is: 304.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.05 : 362.22 = 221.43 : x
  2. Step 2: Convert to fraction form
    263.05/362.22 = 221.43/x
  3. Step 3: Cross multiply
    263.05x = 362.22 × 221.43
  4. Step 4: Simplify right side
    263.05x = 80,208.15
  5. Step 5: Solve for x
    x = 80,208.15/263.05
  6. Step 6: Final answer
    x = 304.92

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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.