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Finding the Fourth Proportional to 201.35, 302.03 and 71.31

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Solution

The fourth proportional to 201.35, 302.03 and 71.31 is: 106.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.35 : 302.03 = 71.31 : x
  2. Step 2: Convert to fraction form
    201.35/302.03 = 71.31/x
  3. Step 3: Cross multiply
    201.35x = 302.03 × 71.31
  4. Step 4: Simplify right side
    201.35x = 21,537.40
  5. Step 5: Solve for x
    x = 21,537.40/201.35
  6. Step 6: Final answer
    x = 106.97

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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.