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Finding the Fourth Proportional to 319.47, 440.60 and 236.44

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Solution

The fourth proportional to 319.47, 440.60 and 236.44 is: 326.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    319.47 : 440.60 = 236.44 : x
  2. Step 2: Convert to fraction form
    319.47/440.60 = 236.44/x
  3. Step 3: Cross multiply
    319.47x = 440.60 × 236.44
  4. Step 4: Simplify right side
    319.47x = 104,175.46
  5. Step 5: Solve for x
    x = 104,175.46/319.47
  6. Step 6: Final answer
    x = 326.09

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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.