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Finding the Fourth Proportional to 267.42, 399.42 and 223.80

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Solution

The fourth proportional to 267.42, 399.42 and 223.80 is: 334.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.42 : 399.42 = 223.80 : x
  2. Step 2: Convert to fraction form
    267.42/399.42 = 223.80/x
  3. Step 3: Cross multiply
    267.42x = 399.42 × 223.80
  4. Step 4: Simplify right side
    267.42x = 89,390.20
  5. Step 5: Solve for x
    x = 89,390.20/267.42
  6. Step 6: Final answer
    x = 334.27

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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.