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Finding the Fourth Proportional to 201.44, 302.20 and 124.48

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Solution

The fourth proportional to 201.44, 302.20 and 124.48 is: 186.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.44 : 302.20 = 124.48 : x
  2. Step 2: Convert to fraction form
    201.44/302.20 = 124.48/x
  3. Step 3: Cross multiply
    201.44x = 302.20 × 124.48
  4. Step 4: Simplify right side
    201.44x = 37,617.86
  5. Step 5: Solve for x
    x = 37,617.86/201.44
  6. Step 6: Final answer
    x = 186.74

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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.