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Finding the Fourth Proportional to 267.36, 368.96 and 156.83

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Solution

The fourth proportional to 267.36, 368.96 and 156.83 is: 216.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.36 : 368.96 = 156.83 : x
  2. Step 2: Convert to fraction form
    267.36/368.96 = 156.83/x
  3. Step 3: Cross multiply
    267.36x = 368.96 × 156.83
  4. Step 4: Simplify right side
    267.36x = 57,865.31
  5. Step 5: Solve for x
    x = 57,865.31/267.36
  6. Step 6: Final answer
    x = 216.43

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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.