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Finding the Fourth Proportional to 267.09, 368.36 and 156.52

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Solution

The fourth proportional to 267.09, 368.36 and 156.52 is: 215.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.09 : 368.36 = 156.52 : x
  2. Step 2: Convert to fraction form
    267.09/368.36 = 156.52/x
  3. Step 3: Cross multiply
    267.09x = 368.36 × 156.52
  4. Step 4: Simplify right side
    267.09x = 57,655.71
  5. Step 5: Solve for x
    x = 57,655.71/267.09
  6. Step 6: Final answer
    x = 215.87

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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.