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Finding the Fourth Proportional to 454.44, 626.79 and 343.71

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Solution

The fourth proportional to 454.44, 626.79 and 343.71 is: 474.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.44 : 626.79 = 343.71 : x
  2. Step 2: Convert to fraction form
    454.44/626.79 = 343.71/x
  3. Step 3: Cross multiply
    454.44x = 626.79 × 343.71
  4. Step 4: Simplify right side
    454.44x = 215,433.99
  5. Step 5: Solve for x
    x = 215,433.99/454.44
  6. Step 6: Final answer
    x = 474.06

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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.