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Finding the Fourth Proportional to 268.14, 369.72 and 248.70

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Solution

The fourth proportional to 268.14, 369.72 and 248.70 is: 342.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.14 : 369.72 = 248.70 : x
  2. Step 2: Convert to fraction form
    268.14/369.72 = 248.70/x
  3. Step 3: Cross multiply
    268.14x = 369.72 × 248.70
  4. Step 4: Simplify right side
    268.14x = 91,949.36
  5. Step 5: Solve for x
    x = 91,949.36/268.14
  6. Step 6: Final answer
    x = 342.92

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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.