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Finding the Fourth Proportional to 557.91, 835.79 and 269.55

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Solution

The fourth proportional to 557.91, 835.79 and 269.55 is: 403.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.91 : 835.79 = 269.55 : x
  2. Step 2: Convert to fraction form
    557.91/835.79 = 269.55/x
  3. Step 3: Cross multiply
    557.91x = 835.79 × 269.55
  4. Step 4: Simplify right side
    557.91x = 225,285.85
  5. Step 5: Solve for x
    x = 225,285.85/557.91
  6. Step 6: Final answer
    x = 403.80

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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.