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Finding the Fourth Proportional to 268.06, 368.68 and 247.55

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Solution

The fourth proportional to 268.06, 368.68 and 247.55 is: 340.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.06 : 368.68 = 247.55 : x
  2. Step 2: Convert to fraction form
    268.06/368.68 = 247.55/x
  3. Step 3: Cross multiply
    268.06x = 368.68 × 247.55
  4. Step 4: Simplify right side
    268.06x = 91,266.73
  5. Step 5: Solve for x
    x = 91,266.73/268.06
  6. Step 6: Final answer
    x = 340.48

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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.