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Finding the Fourth Proportional to 268.76, 369.60 and 224.48

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Solution

The fourth proportional to 268.76, 369.60 and 224.48 is: 308.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.76 : 369.60 = 224.48 : x
  2. Step 2: Convert to fraction form
    268.76/369.60 = 224.48/x
  3. Step 3: Cross multiply
    268.76x = 369.60 × 224.48
  4. Step 4: Simplify right side
    268.76x = 82,967.89
  5. Step 5: Solve for x
    x = 82,967.89/268.76
  6. Step 6: Final answer
    x = 308.70

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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.