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Finding the Fourth Proportional to 230.46, 342.98 and 221.82

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Solution

The fourth proportional to 230.46, 342.98 and 221.82 is: 330.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.46 : 342.98 = 221.82 : x
  2. Step 2: Convert to fraction form
    230.46/342.98 = 221.82/x
  3. Step 3: Cross multiply
    230.46x = 342.98 × 221.82
  4. Step 4: Simplify right side
    230.46x = 76,078.71
  5. Step 5: Solve for x
    x = 76,078.71/230.46
  6. Step 6: Final answer
    x = 330.12

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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.