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Finding the Fourth Proportional to 330.36, 495 and 113.82

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Solution

The fourth proportional to 330.36, 495 and 113.82 is: 170.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.36 : 495 = 113.82 : x
  2. Step 2: Convert to fraction form
    330.36/495 = 113.82/x
  3. Step 3: Cross multiply
    330.36x = 495 × 113.82
  4. Step 4: Simplify right side
    330.36x = 56,340.90
  5. Step 5: Solve for x
    x = 56,340.90/330.36
  6. Step 6: Final answer
    x = 170.54

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Why These Related Problems?

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