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Finding the Fourth Proportional to 201.12, 277.76 and 162.24

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Solution

The fourth proportional to 201.12, 277.76 and 162.24 is: 224.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.12 : 277.76 = 162.24 : x
  2. Step 2: Convert to fraction form
    201.12/277.76 = 162.24/x
  3. Step 3: Cross multiply
    201.12x = 277.76 × 162.24
  4. Step 4: Simplify right side
    201.12x = 45,063.78
  5. Step 5: Solve for x
    x = 45,063.78/201.12
  6. Step 6: Final answer
    x = 224.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.