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Finding the Fourth Proportional to 217.19, 325.50 and 125.96

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Solution

The fourth proportional to 217.19, 325.50 and 125.96 is: 188.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    217.19 : 325.50 = 125.96 : x
  2. Step 2: Convert to fraction form
    217.19/325.50 = 125.96/x
  3. Step 3: Cross multiply
    217.19x = 325.50 × 125.96
  4. Step 4: Simplify right side
    217.19x = 40,998.35
  5. Step 5: Solve for x
    x = 40,998.35/217.19
  6. Step 6: Final answer
    x = 188.77

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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.