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Finding the Fourth Proportional to 216.60, 325.50 and 108.48

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Solution

The fourth proportional to 216.60, 325.50 and 108.48 is: 163.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    216.60 : 325.50 = 108.48 : x
  2. Step 2: Convert to fraction form
    216.60/325.50 = 108.48/x
  3. Step 3: Cross multiply
    216.60x = 325.50 × 108.48
  4. Step 4: Simplify right side
    216.60x = 35,310.24
  5. Step 5: Solve for x
    x = 35,310.24/216.60
  6. Step 6: Final answer
    x = 163.02

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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.