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Finding the Fourth Proportional to 267.89, 369.65 and 151.45

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Solution

The fourth proportional to 267.89, 369.65 and 151.45 is: 208.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.89 : 369.65 = 151.45 : x
  2. Step 2: Convert to fraction form
    267.89/369.65 = 151.45/x
  3. Step 3: Cross multiply
    267.89x = 369.65 × 151.45
  4. Step 4: Simplify right side
    267.89x = 55,982.95
  5. Step 5: Solve for x
    x = 55,982.95/267.89
  6. Step 6: Final answer
    x = 208.98

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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.