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Finding the Fourth Proportional to 281.52, 419.52 and 267.60

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Solution

The fourth proportional to 281.52, 419.52 and 267.60 is: 398.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    281.52 : 419.52 = 267.60 : x
  2. Step 2: Convert to fraction form
    281.52/419.52 = 267.60/x
  3. Step 3: Cross multiply
    281.52x = 419.52 × 267.60
  4. Step 4: Simplify right side
    281.52x = 112,263.55
  5. Step 5: Solve for x
    x = 112,263.55/281.52
  6. Step 6: Final answer
    x = 398.78

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.