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Finding the Fourth Proportional to 331.98, 498.69 and 203.82

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Solution

The fourth proportional to 331.98, 498.69 and 203.82 is: 306.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.98 : 498.69 = 203.82 : x
  2. Step 2: Convert to fraction form
    331.98/498.69 = 203.82/x
  3. Step 3: Cross multiply
    331.98x = 498.69 × 203.82
  4. Step 4: Simplify right side
    331.98x = 101,643.00
  5. Step 5: Solve for x
    x = 101,643.00/331.98
  6. Step 6: Final answer
    x = 306.17

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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.