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Finding the Fourth Proportional to 267.19, 368.55 and 168.78

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Solution

The fourth proportional to 267.19, 368.55 and 168.78 is: 232.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.19 : 368.55 = 168.78 : x
  2. Step 2: Convert to fraction form
    267.19/368.55 = 168.78/x
  3. Step 3: Cross multiply
    267.19x = 368.55 × 168.78
  4. Step 4: Simplify right side
    267.19x = 62,203.87
  5. Step 5: Solve for x
    x = 62,203.87/267.19
  6. Step 6: Final answer
    x = 232.81

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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.