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Finding the Fourth Proportional to 267.20, 368.47 and 188.49

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Solution

The fourth proportional to 267.20, 368.47 and 188.49 is: 259.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.20 : 368.47 = 188.49 : x
  2. Step 2: Convert to fraction form
    267.20/368.47 = 188.49/x
  3. Step 3: Cross multiply
    267.20x = 368.47 × 188.49
  4. Step 4: Simplify right side
    267.20x = 69,452.44
  5. Step 5: Solve for x
    x = 69,452.44/267.20
  6. Step 6: Final answer
    x = 259.93

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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.