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Finding the Fourth Proportional to 267.18, 400.72 and 104.86

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Solution

The fourth proportional to 267.18, 400.72 and 104.86 is: 157.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.18 : 400.72 = 104.86 : x
  2. Step 2: Convert to fraction form
    267.18/400.72 = 104.86/x
  3. Step 3: Cross multiply
    267.18x = 400.72 × 104.86
  4. Step 4: Simplify right side
    267.18x = 42,019.50
  5. Step 5: Solve for x
    x = 42,019.50/267.18
  6. Step 6: Final answer
    x = 157.27

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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.