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Finding the Fourth Proportional to 330.05, 495.14 and 113.65

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Solution

The fourth proportional to 330.05, 495.14 and 113.65 is: 170.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.05 : 495.14 = 113.65 : x
  2. Step 2: Convert to fraction form
    330.05/495.14 = 113.65/x
  3. Step 3: Cross multiply
    330.05x = 495.14 × 113.65
  4. Step 4: Simplify right side
    330.05x = 56,270.47
  5. Step 5: Solve for x
    x = 56,270.47/330.05
  6. Step 6: Final answer
    x = 170.49

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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.