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Finding the Fourth Proportional to 191.42, 263.49 and 165.29

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Solution

The fourth proportional to 191.42, 263.49 and 165.29 is: 227.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    191.42 : 263.49 = 165.29 : x
  2. Step 2: Convert to fraction form
    191.42/263.49 = 165.29/x
  3. Step 3: Cross multiply
    191.42x = 263.49 × 165.29
  4. Step 4: Simplify right side
    191.42x = 43,550.94
  5. Step 5: Solve for x
    x = 43,550.94/191.42
  6. Step 6: Final answer
    x = 227.52

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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.