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Finding the Fourth Proportional to 324.04, 485.97 and 161.68

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Solution

The fourth proportional to 324.04, 485.97 and 161.68 is: 242.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.04 : 485.97 = 161.68 : x
  2. Step 2: Convert to fraction form
    324.04/485.97 = 161.68/x
  3. Step 3: Cross multiply
    324.04x = 485.97 × 161.68
  4. Step 4: Simplify right side
    324.04x = 78,571.63
  5. Step 5: Solve for x
    x = 78,571.63/324.04
  6. Step 6: Final answer
    x = 242.48

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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.