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Finding the Fourth Proportional to 216.41, 324.74 and 108.27

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Solution

The fourth proportional to 216.41, 324.74 and 108.27 is: 162.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    216.41 : 324.74 = 108.27 : x
  2. Step 2: Convert to fraction form
    216.41/324.74 = 108.27/x
  3. Step 3: Cross multiply
    216.41x = 324.74 × 108.27
  4. Step 4: Simplify right side
    216.41x = 35,159.87
  5. Step 5: Solve for x
    x = 35,159.87/216.41
  6. Step 6: Final answer
    x = 162.47

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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.