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Finding the Fourth Proportional to 259.56, 355.85 and 255.32

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Solution

The fourth proportional to 259.56, 355.85 and 255.32 is: 350.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    259.56 : 355.85 = 255.32 : x
  2. Step 2: Convert to fraction form
    259.56/355.85 = 255.32/x
  3. Step 3: Cross multiply
    259.56x = 355.85 × 255.32
  4. Step 4: Simplify right side
    259.56x = 90,855.62
  5. Step 5: Solve for x
    x = 90,855.62/259.56
  6. Step 6: Final answer
    x = 350.04

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.