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Finding the Fourth Proportional to 447.23, 617.34 and 400.52

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Solution

The fourth proportional to 447.23, 617.34 and 400.52 is: 552.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.23 : 617.34 = 400.52 : x
  2. Step 2: Convert to fraction form
    447.23/617.34 = 400.52/x
  3. Step 3: Cross multiply
    447.23x = 617.34 × 400.52
  4. Step 4: Simplify right side
    447.23x = 247,253.93
  5. Step 5: Solve for x
    x = 247,253.93/447.23
  6. Step 6: Final answer
    x = 552.86

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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.