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Finding the Fourth Proportional to 191.35, 263.91 and 125.92

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Solution

The fourth proportional to 191.35, 263.91 and 125.92 is: 173.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    191.35 : 263.91 = 125.92 : x
  2. Step 2: Convert to fraction form
    191.35/263.91 = 125.92/x
  3. Step 3: Cross multiply
    191.35x = 263.91 × 125.92
  4. Step 4: Simplify right side
    191.35x = 33,231.55
  5. Step 5: Solve for x
    x = 33,231.55/191.35
  6. Step 6: Final answer
    x = 173.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.