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Finding the Fourth Proportional to 353.44, 531.04 and 331.56

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Solution

The fourth proportional to 353.44, 531.04 and 331.56 is: 498.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.44 : 531.04 = 331.56 : x
  2. Step 2: Convert to fraction form
    353.44/531.04 = 331.56/x
  3. Step 3: Cross multiply
    353.44x = 531.04 × 331.56
  4. Step 4: Simplify right side
    353.44x = 176,071.62
  5. Step 5: Solve for x
    x = 176,071.62/353.44
  6. Step 6: Final answer
    x = 498.17

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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.