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Finding the Fourth Proportional to 170.19, 234.72 and 112.05

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Solution

The fourth proportional to 170.19, 234.72 and 112.05 is: 154.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.19 : 234.72 = 112.05 : x
  2. Step 2: Convert to fraction form
    170.19/234.72 = 112.05/x
  3. Step 3: Cross multiply
    170.19x = 234.72 × 112.05
  4. Step 4: Simplify right side
    170.19x = 26,300.38
  5. Step 5: Solve for x
    x = 26,300.38/170.19
  6. Step 6: Final answer
    x = 154.54

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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.