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Finding the Fourth Proportional to 447.80, 664.16 and 441.32

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Solution

The fourth proportional to 447.80, 664.16 and 441.32 is: 654.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.80 : 664.16 = 441.32 : x
  2. Step 2: Convert to fraction form
    447.80/664.16 = 441.32/x
  3. Step 3: Cross multiply
    447.80x = 664.16 × 441.32
  4. Step 4: Simplify right side
    447.80x = 293,107.09
  5. Step 5: Solve for x
    x = 293,107.09/447.80
  6. Step 6: Final answer
    x = 654.55

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.