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Finding the Fourth Proportional to 447.93, 617.79 and 329.94

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Solution

The fourth proportional to 447.93, 617.79 and 329.94 is: 455.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.93 : 617.79 = 329.94 : x
  2. Step 2: Convert to fraction form
    447.93/617.79 = 329.94/x
  3. Step 3: Cross multiply
    447.93x = 617.79 × 329.94
  4. Step 4: Simplify right side
    447.93x = 203,833.63
  5. Step 5: Solve for x
    x = 203,833.63/447.93
  6. Step 6: Final answer
    x = 455.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.