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Finding the Fourth Proportional to 604.36, 833.82 and 394.78

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Solution

The fourth proportional to 604.36, 833.82 and 394.78 is: 544.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.36 : 833.82 = 394.78 : x
  2. Step 2: Convert to fraction form
    604.36/833.82 = 394.78/x
  3. Step 3: Cross multiply
    604.36x = 833.82 × 394.78
  4. Step 4: Simplify right side
    604.36x = 329,175.46
  5. Step 5: Solve for x
    x = 329,175.46/604.36
  6. Step 6: Final answer
    x = 544.67

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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.