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Finding the Fourth Proportional to 236.56, 325.80 and 218.32

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Solution

The fourth proportional to 236.56, 325.80 and 218.32 is: 300.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    236.56 : 325.80 = 218.32 : x
  2. Step 2: Convert to fraction form
    236.56/325.80 = 218.32/x
  3. Step 3: Cross multiply
    236.56x = 325.80 × 218.32
  4. Step 4: Simplify right side
    236.56x = 71,128.66
  5. Step 5: Solve for x
    x = 71,128.66/236.56
  6. Step 6: Final answer
    x = 300.68

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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.