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Finding the Fourth Proportional to 236.35, 325.92 and 218.13

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Solution

The fourth proportional to 236.35, 325.92 and 218.13 is: 300.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.35 : 325.92 = 218.13 : x
  2. Step 2: Convert to fraction form
    236.35/325.92 = 218.13/x
  3. Step 3: Cross multiply
    236.35x = 325.92 × 218.13
  4. Step 4: Simplify right side
    236.35x = 71,092.93
  5. Step 5: Solve for x
    x = 71,092.93/236.35
  6. Step 6: Final answer
    x = 300.80

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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.