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Finding the Fourth Proportional to 201.21, 301.83 and 56.94

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Solution

The fourth proportional to 201.21, 301.83 and 56.94 is: 85.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.21 : 301.83 = 56.94 : x
  2. Step 2: Convert to fraction form
    201.21/301.83 = 56.94/x
  3. Step 3: Cross multiply
    201.21x = 301.83 × 56.94
  4. Step 4: Simplify right side
    201.21x = 17,186.20
  5. Step 5: Solve for x
    x = 17,186.20/201.21
  6. Step 6: Final answer
    x = 85.41

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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.