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Finding the Fourth Proportional to 330.25, 495.38 and 113.83

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Solution

The fourth proportional to 330.25, 495.38 and 113.83 is: 170.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.25 : 495.38 = 113.83 : x
  2. Step 2: Convert to fraction form
    330.25/495.38 = 113.83/x
  3. Step 3: Cross multiply
    330.25x = 495.38 × 113.83
  4. Step 4: Simplify right side
    330.25x = 56,389.11
  5. Step 5: Solve for x
    x = 56,389.11/330.25
  6. Step 6: Final answer
    x = 170.75

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.