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Finding the Fourth Proportional to 442.48, 663.48 and 226.16

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Solution

The fourth proportional to 442.48, 663.48 and 226.16 is: 339.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.48 : 663.48 = 226.16 : x
  2. Step 2: Convert to fraction form
    442.48/663.48 = 226.16/x
  3. Step 3: Cross multiply
    442.48x = 663.48 × 226.16
  4. Step 4: Simplify right side
    442.48x = 150,052.64
  5. Step 5: Solve for x
    x = 150,052.64/442.48
  6. Step 6: Final answer
    x = 339.12

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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.