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Finding the Fourth Proportional to 319.44, 440.27 and 236.42

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Solution

The fourth proportional to 319.44, 440.27 and 236.42 is: 325.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    319.44 : 440.27 = 236.42 : x
  2. Step 2: Convert to fraction form
    319.44/440.27 = 236.42/x
  3. Step 3: Cross multiply
    319.44x = 440.27 × 236.42
  4. Step 4: Simplify right side
    319.44x = 104,087.79
  5. Step 5: Solve for x
    x = 104,087.79/319.44
  6. Step 6: Final answer
    x = 325.84

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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.