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Finding the Fourth Proportional to 267.50, 369.15 and 151.09

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Solution

The fourth proportional to 267.50, 369.15 and 151.09 is: 208.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.50 : 369.15 = 151.09 : x
  2. Step 2: Convert to fraction form
    267.50/369.15 = 151.09/x
  3. Step 3: Cross multiply
    267.50x = 369.15 × 151.09
  4. Step 4: Simplify right side
    267.50x = 55,774.87
  5. Step 5: Solve for x
    x = 55,774.87/267.50
  6. Step 6: Final answer
    x = 208.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.