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Finding the Fourth Proportional to 191.58, 263.18 and 186.12

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Solution

The fourth proportional to 191.58, 263.18 and 186.12 is: 255.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    191.58 : 263.18 = 186.12 : x
  2. Step 2: Convert to fraction form
    191.58/263.18 = 186.12/x
  3. Step 3: Cross multiply
    191.58x = 263.18 × 186.12
  4. Step 4: Simplify right side
    191.58x = 48,982.13
  5. Step 5: Solve for x
    x = 48,982.13/191.58
  6. Step 6: Final answer
    x = 255.67

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.