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Finding the Fourth Proportional to 324.19, 446.27 and 290.37

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Solution

The fourth proportional to 324.19, 446.27 and 290.37 is: 399.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.19 : 446.27 = 290.37 : x
  2. Step 2: Convert to fraction form
    324.19/446.27 = 290.37/x
  3. Step 3: Cross multiply
    324.19x = 446.27 × 290.37
  4. Step 4: Simplify right side
    324.19x = 129,583.42
  5. Step 5: Solve for x
    x = 129,583.42/324.19
  6. Step 6: Final answer
    x = 399.71

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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.