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Finding the Fourth Proportional to 268.87, 372.78 and 259.87

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Solution

The fourth proportional to 268.87, 372.78 and 259.87 is: 360.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.87 : 372.78 = 259.87 : x
  2. Step 2: Convert to fraction form
    268.87/372.78 = 259.87/x
  3. Step 3: Cross multiply
    268.87x = 372.78 × 259.87
  4. Step 4: Simplify right side
    268.87x = 96,874.34
  5. Step 5: Solve for x
    x = 96,874.34/268.87
  6. Step 6: Final answer
    x = 360.30

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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.