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Finding the Fourth Proportional to 216.68, 325.22 and 135.27

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Solution

The fourth proportional to 216.68, 325.22 and 135.27 is: 203.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    216.68 : 325.22 = 135.27 : x
  2. Step 2: Convert to fraction form
    216.68/325.22 = 135.27/x
  3. Step 3: Cross multiply
    216.68x = 325.22 × 135.27
  4. Step 4: Simplify right side
    216.68x = 43,991.83
  5. Step 5: Solve for x
    x = 43,991.83/216.68
  6. Step 6: Final answer
    x = 203.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.