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Finding the Fourth Proportional to 445.44, 668.28 and 324.72

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Solution

The fourth proportional to 445.44, 668.28 and 324.72 is: 487.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.44 : 668.28 = 324.72 : x
  2. Step 2: Convert to fraction form
    445.44/668.28 = 324.72/x
  3. Step 3: Cross multiply
    445.44x = 668.28 × 324.72
  4. Step 4: Simplify right side
    445.44x = 217,003.88
  5. Step 5: Solve for x
    x = 217,003.88/445.44
  6. Step 6: Final answer
    x = 487.17

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Similar ratio
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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.