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Finding the Fourth Proportional to 324.21, 446.77 and 230.79

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Solution

The fourth proportional to 324.21, 446.77 and 230.79 is: 318.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.21 : 446.77 = 230.79 : x
  2. Step 2: Convert to fraction form
    324.21/446.77 = 230.79/x
  3. Step 3: Cross multiply
    324.21x = 446.77 × 230.79
  4. Step 4: Simplify right side
    324.21x = 103,112.01
  5. Step 5: Solve for x
    x = 103,112.01/324.21
  6. Step 6: Final answer
    x = 318.04

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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.