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Finding the Fourth Proportional to 230.58, 344.22 and 221.46

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Solution

The fourth proportional to 230.58, 344.22 and 221.46 is: 330.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.58 : 344.22 = 221.46 : x
  2. Step 2: Convert to fraction form
    230.58/344.22 = 221.46/x
  3. Step 3: Cross multiply
    230.58x = 344.22 × 221.46
  4. Step 4: Simplify right side
    230.58x = 76,230.96
  5. Step 5: Solve for x
    x = 76,230.96/230.58
  6. Step 6: Final answer
    x = 330.61

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.