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Finding the Fourth Proportional to 376.36, 518.34 and 349.48

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Solution

The fourth proportional to 376.36, 518.34 and 349.48 is: 481.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.36 : 518.34 = 349.48 : x
  2. Step 2: Convert to fraction form
    376.36/518.34 = 349.48/x
  3. Step 3: Cross multiply
    376.36x = 518.34 × 349.48
  4. Step 4: Simplify right side
    376.36x = 181,149.46
  5. Step 5: Solve for x
    x = 181,149.46/376.36
  6. Step 6: Final answer
    x = 481.32

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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.