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Finding the Fourth Proportional to 331.06, 496.66 and 238.62

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Solution

The fourth proportional to 331.06, 496.66 and 238.62 is: 357.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.06 : 496.66 = 238.62 : x
  2. Step 2: Convert to fraction form
    331.06/496.66 = 238.62/x
  3. Step 3: Cross multiply
    331.06x = 496.66 × 238.62
  4. Step 4: Simplify right side
    331.06x = 118,513.01
  5. Step 5: Solve for x
    x = 118,513.01/331.06
  6. Step 6: Final answer
    x = 357.98

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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.