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Finding the Fourth Proportional to 330.98, 456.82 and 191.14

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Solution

The fourth proportional to 330.98, 456.82 and 191.14 is: 263.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.98 : 456.82 = 191.14 : x
  2. Step 2: Convert to fraction form
    330.98/456.82 = 191.14/x
  3. Step 3: Cross multiply
    330.98x = 456.82 × 191.14
  4. Step 4: Simplify right side
    330.98x = 87,316.57
  5. Step 5: Solve for x
    x = 87,316.57/330.98
  6. Step 6: Final answer
    x = 263.81

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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.