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Finding the Fourth Proportional to 267.72, 369.48 and 157.19

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Solution

The fourth proportional to 267.72, 369.48 and 157.19 is: 216.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.72 : 369.48 = 157.19 : x
  2. Step 2: Convert to fraction form
    267.72/369.48 = 157.19/x
  3. Step 3: Cross multiply
    267.72x = 369.48 × 157.19
  4. Step 4: Simplify right side
    267.72x = 58,079.48
  5. Step 5: Solve for x
    x = 58,079.48/267.72
  6. Step 6: Final answer
    x = 216.94

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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.