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Finding the Fourth Proportional to 442.96, 665.62 and 226.68

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Solution

The fourth proportional to 442.96, 665.62 and 226.68 is: 340.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.96 : 665.62 = 226.68 : x
  2. Step 2: Convert to fraction form
    442.96/665.62 = 226.68/x
  3. Step 3: Cross multiply
    442.96x = 665.62 × 226.68
  4. Step 4: Simplify right side
    442.96x = 150,882.74
  5. Step 5: Solve for x
    x = 150,882.74/442.96
  6. Step 6: Final answer
    x = 340.62

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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.