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Finding the Fourth Proportional to 267.98, 369.79 and 151.55

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Solution

The fourth proportional to 267.98, 369.79 and 151.55 is: 209.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.98 : 369.79 = 151.55 : x
  2. Step 2: Convert to fraction form
    267.98/369.79 = 151.55/x
  3. Step 3: Cross multiply
    267.98x = 369.79 × 151.55
  4. Step 4: Simplify right side
    267.98x = 56,041.67
  5. Step 5: Solve for x
    x = 56,041.67/267.98
  6. Step 6: Final answer
    x = 209.13

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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.