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Finding the Fourth Proportional to 170.36, 234.92 and 147.12

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Solution

The fourth proportional to 170.36, 234.92 and 147.12 is: 202.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.36 : 234.92 = 147.12 : x
  2. Step 2: Convert to fraction form
    170.36/234.92 = 147.12/x
  3. Step 3: Cross multiply
    170.36x = 234.92 × 147.12
  4. Step 4: Simplify right side
    170.36x = 34,560.69
  5. Step 5: Solve for x
    x = 34,560.69/170.36
  6. Step 6: Final answer
    x = 202.87

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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.