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Finding the Fourth Proportional to 216.96, 325.53 and 95.22

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Solution

The fourth proportional to 216.96, 325.53 and 95.22 is: 142.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    216.96 : 325.53 = 95.22 : x
  2. Step 2: Convert to fraction form
    216.96/325.53 = 95.22/x
  3. Step 3: Cross multiply
    216.96x = 325.53 × 95.22
  4. Step 4: Simplify right side
    216.96x = 30,996.97
  5. Step 5: Solve for x
    x = 30,996.97/216.96
  6. Step 6: Final answer
    x = 142.87

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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.