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Finding the Fourth Proportional to 442.35, 663.66 and 226.08

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Solution

The fourth proportional to 442.35, 663.66 and 226.08 is: 339.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.35 : 663.66 = 226.08 : x
  2. Step 2: Convert to fraction form
    442.35/663.66 = 226.08/x
  3. Step 3: Cross multiply
    442.35x = 663.66 × 226.08
  4. Step 4: Simplify right side
    442.35x = 150,040.25
  5. Step 5: Solve for x
    x = 150,040.25/442.35
  6. Step 6: Final answer
    x = 339.19

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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.