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Finding the Fourth Proportional to 267.93, 401.22 and 218.70

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Solution

The fourth proportional to 267.93, 401.22 and 218.70 is: 327.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.93 : 401.22 = 218.70 : x
  2. Step 2: Convert to fraction form
    267.93/401.22 = 218.70/x
  3. Step 3: Cross multiply
    267.93x = 401.22 × 218.70
  4. Step 4: Simplify right side
    267.93x = 87,746.81
  5. Step 5: Solve for x
    x = 87,746.81/267.93
  6. Step 6: Final answer
    x = 327.50

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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.