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Finding the Fourth Proportional to 259.93, 356.38 and 255.32

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Solution

The fourth proportional to 259.93, 356.38 and 255.32 is: 350.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    259.93 : 356.38 = 255.32 : x
  2. Step 2: Convert to fraction form
    259.93/356.38 = 255.32/x
  3. Step 3: Cross multiply
    259.93x = 356.38 × 255.32
  4. Step 4: Simplify right side
    259.93x = 90,990.94
  5. Step 5: Solve for x
    x = 90,990.94/259.93
  6. Step 6: Final answer
    x = 350.06

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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.