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Finding the Fourth Proportional to 331.39, 498.30 and 229.33

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Solution

The fourth proportional to 331.39, 498.30 and 229.33 is: 344.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.39 : 498.30 = 229.33 : x
  2. Step 2: Convert to fraction form
    331.39/498.30 = 229.33/x
  3. Step 3: Cross multiply
    331.39x = 498.30 × 229.33
  4. Step 4: Simplify right side
    331.39x = 114,276.19
  5. Step 5: Solve for x
    x = 114,276.19/331.39
  6. Step 6: Final answer
    x = 344.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.