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Finding the Fourth Proportional to 267.39, 368.89 and 155.37

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Solution

The fourth proportional to 267.39, 368.89 and 155.37 is: 214.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.39 : 368.89 = 155.37 : x
  2. Step 2: Convert to fraction form
    267.39/368.89 = 155.37/x
  3. Step 3: Cross multiply
    267.39x = 368.89 × 155.37
  4. Step 4: Simplify right side
    267.39x = 57,313.03
  5. Step 5: Solve for x
    x = 57,313.03/267.39
  6. Step 6: Final answer
    x = 214.34

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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.