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Finding the Fourth Proportional to 331.06, 495.72 and 194.16

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Solution

The fourth proportional to 331.06, 495.72 and 194.16 is: 290.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.06 : 495.72 = 194.16 : x
  2. Step 2: Convert to fraction form
    331.06/495.72 = 194.16/x
  3. Step 3: Cross multiply
    331.06x = 495.72 × 194.16
  4. Step 4: Simplify right side
    331.06x = 96,249.00
  5. Step 5: Solve for x
    x = 96,249.00/331.06
  6. Step 6: Final answer
    x = 290.73

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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.