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Finding the Fourth Proportional to 349.66, 484.60 and 343.18

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Solution

The fourth proportional to 349.66, 484.60 and 343.18 is: 475.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.66 : 484.60 = 343.18 : x
  2. Step 2: Convert to fraction form
    349.66/484.60 = 343.18/x
  3. Step 3: Cross multiply
    349.66x = 484.60 × 343.18
  4. Step 4: Simplify right side
    349.66x = 166,305.03
  5. Step 5: Solve for x
    x = 166,305.03/349.66
  6. Step 6: Final answer
    x = 475.62

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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.