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Finding the Fourth Proportional to 249.20, 345.46 and 236.03

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Solution

The fourth proportional to 249.20, 345.46 and 236.03 is: 327.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.20 : 345.46 = 236.03 : x
  2. Step 2: Convert to fraction form
    249.20/345.46 = 236.03/x
  3. Step 3: Cross multiply
    249.20x = 345.46 × 236.03
  4. Step 4: Simplify right side
    249.20x = 81,537.71
  5. Step 5: Solve for x
    x = 81,537.71/249.20
  6. Step 6: Final answer
    x = 327.20

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.