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Finding the Fourth Proportional to 267.57, 369.17 and 157.07

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Solution

The fourth proportional to 267.57, 369.17 and 157.07 is: 216.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.57 : 369.17 = 157.07 : x
  2. Step 2: Convert to fraction form
    267.57/369.17 = 157.07/x
  3. Step 3: Cross multiply
    267.57x = 369.17 × 157.07
  4. Step 4: Simplify right side
    267.57x = 57,985.53
  5. Step 5: Solve for x
    x = 57,985.53/267.57
  6. Step 6: Final answer
    x = 216.71

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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.