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Finding the Fourth Proportional to 343.46, 474.04 and 219.09

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Solution

The fourth proportional to 343.46, 474.04 and 219.09 is: 302.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.46 : 474.04 = 219.09 : x
  2. Step 2: Convert to fraction form
    343.46/474.04 = 219.09/x
  3. Step 3: Cross multiply
    343.46x = 474.04 × 219.09
  4. Step 4: Simplify right side
    343.46x = 103,857.42
  5. Step 5: Solve for x
    x = 103,857.42/343.46
  6. Step 6: Final answer
    x = 302.39

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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.