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Finding the Fourth Proportional to 331.72, 496.93 and 158.14

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Solution

The fourth proportional to 331.72, 496.93 and 158.14 is: 236.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.72 : 496.93 = 158.14 : x
  2. Step 2: Convert to fraction form
    331.72/496.93 = 158.14/x
  3. Step 3: Cross multiply
    331.72x = 496.93 × 158.14
  4. Step 4: Simplify right side
    331.72x = 78,584.51
  5. Step 5: Solve for x
    x = 78,584.51/331.72
  6. Step 6: Final answer
    x = 236.90

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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.