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Finding the Fourth Proportional to 216.64, 325.05 and 94.96

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Solution

The fourth proportional to 216.64, 325.05 and 94.96 is: 142.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    216.64 : 325.05 = 94.96 : x
  2. Step 2: Convert to fraction form
    216.64/325.05 = 94.96/x
  3. Step 3: Cross multiply
    216.64x = 325.05 × 94.96
  4. Step 4: Simplify right side
    216.64x = 30,866.75
  5. Step 5: Solve for x
    x = 30,866.75/216.64
  6. Step 6: Final answer
    x = 142.48

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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.