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Finding the Fourth Proportional to 604.47, 834.36 and 394.28

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Solution

The fourth proportional to 604.47, 834.36 and 394.28 is: 544.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.47 : 834.36 = 394.28 : x
  2. Step 2: Convert to fraction form
    604.47/834.36 = 394.28/x
  3. Step 3: Cross multiply
    604.47x = 834.36 × 394.28
  4. Step 4: Simplify right side
    604.47x = 328,968.94
  5. Step 5: Solve for x
    x = 328,968.94/604.47
  6. Step 6: Final answer
    x = 544.22

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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.