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Finding the Fourth Proportional to 408.14, 563.49 and 297.89

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Solution

The fourth proportional to 408.14, 563.49 and 297.89 is: 411.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    408.14 : 563.49 = 297.89 : x
  2. Step 2: Convert to fraction form
    408.14/563.49 = 297.89/x
  3. Step 3: Cross multiply
    408.14x = 563.49 × 297.89
  4. Step 4: Simplify right side
    408.14x = 167,855.22
  5. Step 5: Solve for x
    x = 167,855.22/408.14
  6. Step 6: Final answer
    x = 411.27

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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.