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Finding the Fourth Proportional to 267.45, 400.94 and 145.59

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Solution

The fourth proportional to 267.45, 400.94 and 145.59 is: 218.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.45 : 400.94 = 145.59 : x
  2. Step 2: Convert to fraction form
    267.45/400.94 = 145.59/x
  3. Step 3: Cross multiply
    267.45x = 400.94 × 145.59
  4. Step 4: Simplify right side
    267.45x = 58,372.13
  5. Step 5: Solve for x
    x = 58,372.13/267.45
  6. Step 6: Final answer
    x = 218.25

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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.