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Finding the Fourth Proportional to 319.37, 440.85 and 203.27

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Solution

The fourth proportional to 319.37, 440.85 and 203.27 is: 280.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    319.37 : 440.85 = 203.27 : x
  2. Step 2: Convert to fraction form
    319.37/440.85 = 203.27/x
  3. Step 3: Cross multiply
    319.37x = 440.85 × 203.27
  4. Step 4: Simplify right side
    319.37x = 89,609.38
  5. Step 5: Solve for x
    x = 89,609.38/319.37
  6. Step 6: Final answer
    x = 280.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.