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Finding the Fourth Proportional to 493.17, 738.54 and 396.78

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Solution

The fourth proportional to 493.17, 738.54 and 396.78 is: 594.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.17 : 738.54 = 396.78 : x
  2. Step 2: Convert to fraction form
    493.17/738.54 = 396.78/x
  3. Step 3: Cross multiply
    493.17x = 738.54 × 396.78
  4. Step 4: Simplify right side
    493.17x = 293,037.90
  5. Step 5: Solve for x
    x = 293,037.90/493.17
  6. Step 6: Final answer
    x = 594.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.