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Finding the Fourth Proportional to 268.22, 369.86 and 202.62

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Solution

The fourth proportional to 268.22, 369.86 and 202.62 is: 279.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.22 : 369.86 = 202.62 : x
  2. Step 2: Convert to fraction form
    268.22/369.86 = 202.62/x
  3. Step 3: Cross multiply
    268.22x = 369.86 × 202.62
  4. Step 4: Simplify right side
    268.22x = 74,941.03
  5. Step 5: Solve for x
    x = 74,941.03/268.22
  6. Step 6: Final answer
    x = 279.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.