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Finding the Fourth Proportional to 331.00, 456.77 and 191.11

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Solution

The fourth proportional to 331.00, 456.77 and 191.11 is: 263.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.00 : 456.77 = 191.11 : x
  2. Step 2: Convert to fraction form
    331.00/456.77 = 191.11/x
  3. Step 3: Cross multiply
    331.00x = 456.77 × 191.11
  4. Step 4: Simplify right side
    331.00x = 87,293.31
  5. Step 5: Solve for x
    x = 87,293.31/331.00
  6. Step 6: Final answer
    x = 263.73

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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.