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Finding the Fourth Proportional to 225.71, 336.35 and 218.37

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Solution

The fourth proportional to 225.71, 336.35 and 218.37 is: 325.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.71 : 336.35 = 218.37 : x
  2. Step 2: Convert to fraction form
    225.71/336.35 = 218.37/x
  3. Step 3: Cross multiply
    225.71x = 336.35 × 218.37
  4. Step 4: Simplify right side
    225.71x = 73,447.66
  5. Step 5: Solve for x
    x = 73,447.66/225.71
  6. Step 6: Final answer
    x = 325.41

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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.