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Finding the Fourth Proportional to 201.18, 301.53 and 178.39

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Solution

The fourth proportional to 201.18, 301.53 and 178.39 is: 267.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.18 : 301.53 = 178.39 : x
  2. Step 2: Convert to fraction form
    201.18/301.53 = 178.39/x
  3. Step 3: Cross multiply
    201.18x = 301.53 × 178.39
  4. Step 4: Simplify right side
    201.18x = 53,789.94
  5. Step 5: Solve for x
    x = 53,789.94/201.18
  6. Step 6: Final answer
    x = 267.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.