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Finding the Fourth Proportional to 351, 486.36 and 343.44

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Solution

The fourth proportional to 351, 486.36 and 343.44 is: 475.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    351 : 486.36 = 343.44 : x
  2. Step 2: Convert to fraction form
    351/486.36 = 343.44/x
  3. Step 3: Cross multiply
    351x = 486.36 × 343.44
  4. Step 4: Simplify right side
    351x = 167,035.48
  5. Step 5: Solve for x
    x = 167,035.48/351
  6. Step 6: Final answer
    x = 475.88

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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.