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Finding the Fourth Proportional to 216.98, 325.19 and 95.12

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Solution

The fourth proportional to 216.98, 325.19 and 95.12 is: 142.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    216.98 : 325.19 = 95.12 : x
  2. Step 2: Convert to fraction form
    216.98/325.19 = 95.12/x
  3. Step 3: Cross multiply
    216.98x = 325.19 × 95.12
  4. Step 4: Simplify right side
    216.98x = 30,929.97
  5. Step 5: Solve for x
    x = 30,929.97/216.98
  6. Step 6: Final answer
    x = 142.55

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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.