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Finding the Fourth Proportional to 267.81, 401.34 and 159.63

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Solution

The fourth proportional to 267.81, 401.34 and 159.63 is: 239.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.81 : 401.34 = 159.63 : x
  2. Step 2: Convert to fraction form
    267.81/401.34 = 159.63/x
  3. Step 3: Cross multiply
    267.81x = 401.34 × 159.63
  4. Step 4: Simplify right side
    267.81x = 64,065.90
  5. Step 5: Solve for x
    x = 64,065.90/267.81
  6. Step 6: Final answer
    x = 239.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.