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Finding the Fourth Proportional to 216.47, 324.11 and 151.33

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Solution

The fourth proportional to 216.47, 324.11 and 151.33 is: 226.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    216.47 : 324.11 = 151.33 : x
  2. Step 2: Convert to fraction form
    216.47/324.11 = 151.33/x
  3. Step 3: Cross multiply
    216.47x = 324.11 × 151.33
  4. Step 4: Simplify right side
    216.47x = 49,046.81
  5. Step 5: Solve for x
    x = 49,046.81/216.47
  6. Step 6: Final answer
    x = 226.58

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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.