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Finding the Fourth Proportional to 259.08, 359.09 and 255.24

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Solution

The fourth proportional to 259.08, 359.09 and 255.24 is: 353.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    259.08 : 359.09 = 255.24 : x
  2. Step 2: Convert to fraction form
    259.08/359.09 = 255.24/x
  3. Step 3: Cross multiply
    259.08x = 359.09 × 255.24
  4. Step 4: Simplify right side
    259.08x = 91,652.86
  5. Step 5: Solve for x
    x = 91,652.86/259.08
  6. Step 6: Final answer
    x = 353.76

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.