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Finding the Fourth Proportional to 324.82, 447.61 and 236.15

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Solution

The fourth proportional to 324.82, 447.61 and 236.15 is: 325.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.82 : 447.61 = 236.15 : x
  2. Step 2: Convert to fraction form
    324.82/447.61 = 236.15/x
  3. Step 3: Cross multiply
    324.82x = 447.61 × 236.15
  4. Step 4: Simplify right side
    324.82x = 105,703.10
  5. Step 5: Solve for x
    x = 105,703.10/324.82
  6. Step 6: Final answer
    x = 325.42

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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.