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Finding the Fourth Proportional to 268.26, 401.48 and 186.75

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Solution

The fourth proportional to 268.26, 401.48 and 186.75 is: 279.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.26 : 401.48 = 186.75 : x
  2. Step 2: Convert to fraction form
    268.26/401.48 = 186.75/x
  3. Step 3: Cross multiply
    268.26x = 401.48 × 186.75
  4. Step 4: Simplify right side
    268.26x = 74,975.46
  5. Step 5: Solve for x
    x = 74,975.46/268.26
  6. Step 6: Final answer
    x = 279.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.