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Finding the Fourth Proportional to 447.26, 670.42 and 230.39

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Solution

The fourth proportional to 447.26, 670.42 and 230.39 is: 345.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.26 : 670.42 = 230.39 : x
  2. Step 2: Convert to fraction form
    447.26/670.42 = 230.39/x
  3. Step 3: Cross multiply
    447.26x = 670.42 × 230.39
  4. Step 4: Simplify right side
    447.26x = 154,453.56
  5. Step 5: Solve for x
    x = 154,453.56/447.26
  6. Step 6: Final answer
    x = 345.33

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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.