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Finding the Fourth Proportional to 201.48, 303.48 and 189.90

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Solution

The fourth proportional to 201.48, 303.48 and 189.90 is: 286.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.48 : 303.48 = 189.90 : x
  2. Step 2: Convert to fraction form
    201.48/303.48 = 189.90/x
  3. Step 3: Cross multiply
    201.48x = 303.48 × 189.90
  4. Step 4: Simplify right side
    201.48x = 57,630.85
  5. Step 5: Solve for x
    x = 57,630.85/201.48
  6. Step 6: Final answer
    x = 286.04

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.