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Finding the Fourth Proportional to 225.36, 335.83 and 218.02

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Solution

The fourth proportional to 225.36, 335.83 and 218.02 is: 324.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.36 : 335.83 = 218.02 : x
  2. Step 2: Convert to fraction form
    225.36/335.83 = 218.02/x
  3. Step 3: Cross multiply
    225.36x = 335.83 × 218.02
  4. Step 4: Simplify right side
    225.36x = 73,217.66
  5. Step 5: Solve for x
    x = 73,217.66/225.36
  6. Step 6: Final answer
    x = 324.89

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.