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Finding the Fourth Proportional to 256.05, 352.89 and 190.44

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Solution

The fourth proportional to 256.05, 352.89 and 190.44 is: 262.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    256.05 : 352.89 = 190.44 : x
  2. Step 2: Convert to fraction form
    256.05/352.89 = 190.44/x
  3. Step 3: Cross multiply
    256.05x = 352.89 × 190.44
  4. Step 4: Simplify right side
    256.05x = 67,204.37
  5. Step 5: Solve for x
    x = 67,204.37/256.05
  6. Step 6: Final answer
    x = 262.47

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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.