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Finding the Fourth Proportional to 191.13, 262.20 and 186.36

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Solution

The fourth proportional to 191.13, 262.20 and 186.36 is: 255.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    191.13 : 262.20 = 186.36 : x
  2. Step 2: Convert to fraction form
    191.13/262.20 = 186.36/x
  3. Step 3: Cross multiply
    191.13x = 262.20 × 186.36
  4. Step 4: Simplify right side
    191.13x = 48,863.59
  5. Step 5: Solve for x
    x = 48,863.59/191.13
  6. Step 6: Final answer
    x = 255.66

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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.