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Finding the Fourth Proportional to 160.97, 222.05 and 102.75

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Solution

The fourth proportional to 160.97, 222.05 and 102.75 is: 141.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.97 : 222.05 = 102.75 : x
  2. Step 2: Convert to fraction form
    160.97/222.05 = 102.75/x
  3. Step 3: Cross multiply
    160.97x = 222.05 × 102.75
  4. Step 4: Simplify right side
    160.97x = 22,816.15
  5. Step 5: Solve for x
    x = 22,816.15/160.97
  6. Step 6: Final answer
    x = 141.74

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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.