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Finding the Fourth Proportional to 324.12, 485.38 and 241.66

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Solution

The fourth proportional to 324.12, 485.38 and 241.66 is: 361.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.12 : 485.38 = 241.66 : x
  2. Step 2: Convert to fraction form
    324.12/485.38 = 241.66/x
  3. Step 3: Cross multiply
    324.12x = 485.38 × 241.66
  4. Step 4: Simplify right side
    324.12x = 117,293.30
  5. Step 5: Solve for x
    x = 117,293.30/324.12
  6. Step 6: Final answer
    x = 361.88

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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.