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Finding the Fourth Proportional to 343.43, 474.08 and 219.25

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Solution

The fourth proportional to 343.43, 474.08 and 219.25 is: 302.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.43 : 474.08 = 219.25 : x
  2. Step 2: Convert to fraction form
    343.43/474.08 = 219.25/x
  3. Step 3: Cross multiply
    343.43x = 474.08 × 219.25
  4. Step 4: Simplify right side
    343.43x = 103,938.57
  5. Step 5: Solve for x
    x = 103,938.57/343.43
  6. Step 6: Final answer
    x = 302.65

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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.