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Finding the Fourth Proportional to 408.68, 563.81 and 259.29

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Solution

The fourth proportional to 408.68, 563.81 and 259.29 is: 357.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    408.68 : 563.81 = 259.29 : x
  2. Step 2: Convert to fraction form
    408.68/563.81 = 259.29/x
  3. Step 3: Cross multiply
    408.68x = 563.81 × 259.29
  4. Step 4: Simplify right side
    408.68x = 146,189.00
  5. Step 5: Solve for x
    x = 146,189.00/408.68
  6. Step 6: Final answer
    x = 357.71

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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.