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Finding the Fourth Proportional to 604.82, 834.80 and 394.63

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Solution

The fourth proportional to 604.82, 834.80 and 394.63 is: 544.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.82 : 834.80 = 394.63 : x
  2. Step 2: Convert to fraction form
    604.82/834.80 = 394.63/x
  3. Step 3: Cross multiply
    604.82x = 834.80 × 394.63
  4. Step 4: Simplify right side
    604.82x = 329,436.19
  5. Step 5: Solve for x
    x = 329,436.19/604.82
  6. Step 6: Final answer
    x = 544.69

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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.