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Finding the Fourth Proportional to 324.59, 447.81 and 206.48

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Solution

The fourth proportional to 324.59, 447.81 and 206.48 is: 284.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.59 : 447.81 = 206.48 : x
  2. Step 2: Convert to fraction form
    324.59/447.81 = 206.48/x
  3. Step 3: Cross multiply
    324.59x = 447.81 × 206.48
  4. Step 4: Simplify right side
    324.59x = 92,461.57
  5. Step 5: Solve for x
    x = 92,461.57/324.59
  6. Step 6: Final answer
    x = 284.86

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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.