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Finding the Fourth Proportional to 281.37, 388.47 and 267.73

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Solution

The fourth proportional to 281.37, 388.47 and 267.73 is: 369.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    281.37 : 388.47 = 267.73 : x
  2. Step 2: Convert to fraction form
    281.37/388.47 = 267.73/x
  3. Step 3: Cross multiply
    281.37x = 388.47 × 267.73
  4. Step 4: Simplify right side
    281.37x = 104,005.07
  5. Step 5: Solve for x
    x = 104,005.07/281.37
  6. Step 6: Final answer
    x = 369.64

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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.