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Finding the Fourth Proportional to 268.18, 371.83 and 253.60

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Solution

The fourth proportional to 268.18, 371.83 and 253.60 is: 351.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.18 : 371.83 = 253.60 : x
  2. Step 2: Convert to fraction form
    268.18/371.83 = 253.60/x
  3. Step 3: Cross multiply
    268.18x = 371.83 × 253.60
  4. Step 4: Simplify right side
    268.18x = 94,296.09
  5. Step 5: Solve for x
    x = 94,296.09/268.18
  6. Step 6: Final answer
    x = 351.61

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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.