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Finding the Fourth Proportional to 347.52, 518.28 and 331.32

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Solution

The fourth proportional to 347.52, 518.28 and 331.32 is: 494.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.52 : 518.28 = 331.32 : x
  2. Step 2: Convert to fraction form
    347.52/518.28 = 331.32/x
  3. Step 3: Cross multiply
    347.52x = 518.28 × 331.32
  4. Step 4: Simplify right side
    347.52x = 171,716.53
  5. Step 5: Solve for x
    x = 171,716.53/347.52
  6. Step 6: Final answer
    x = 494.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.