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Finding the Fourth Proportional to 490.62, 677.03 and 269.57

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Solution

The fourth proportional to 490.62, 677.03 and 269.57 is: 371.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.62 : 677.03 = 269.57 : x
  2. Step 2: Convert to fraction form
    490.62/677.03 = 269.57/x
  3. Step 3: Cross multiply
    490.62x = 677.03 × 269.57
  4. Step 4: Simplify right side
    490.62x = 182,502.24
  5. Step 5: Solve for x
    x = 182,502.24/490.62
  6. Step 6: Final answer
    x = 371.98

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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.