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Finding the Fourth Proportional to 357.91, 493.87 and 200.54

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Solution

The fourth proportional to 357.91, 493.87 and 200.54 is: 276.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.91 : 493.87 = 200.54 : x
  2. Step 2: Convert to fraction form
    357.91/493.87 = 200.54/x
  3. Step 3: Cross multiply
    357.91x = 493.87 × 200.54
  4. Step 4: Simplify right side
    357.91x = 99,037.72
  5. Step 5: Solve for x
    x = 99,037.72/357.91
  6. Step 6: Final answer
    x = 276.71

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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.