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Finding the Fourth Proportional to 443.54, 665.67 and 227.18

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Solution

The fourth proportional to 443.54, 665.67 and 227.18 is: 340.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    443.54 : 665.67 = 227.18 : x
  2. Step 2: Convert to fraction form
    443.54/665.67 = 227.18/x
  3. Step 3: Cross multiply
    443.54x = 665.67 × 227.18
  4. Step 4: Simplify right side
    443.54x = 151,226.91
  5. Step 5: Solve for x
    x = 151,226.91/443.54
  6. Step 6: Final answer
    x = 340.95

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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.