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Finding the Fourth Proportional to 191.18, 262.18 and 181.82

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Solution

The fourth proportional to 191.18, 262.18 and 181.82 is: 249.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    191.18 : 262.18 = 181.82 : x
  2. Step 2: Convert to fraction form
    191.18/262.18 = 181.82/x
  3. Step 3: Cross multiply
    191.18x = 262.18 × 181.82
  4. Step 4: Simplify right side
    191.18x = 47,669.57
  5. Step 5: Solve for x
    x = 47,669.57/191.18
  6. Step 6: Final answer
    x = 249.34

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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.