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Finding the Fourth Proportional to 170.08, 234.81 and 111.09

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Solution

The fourth proportional to 170.08, 234.81 and 111.09 is: 153.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.08 : 234.81 = 111.09 : x
  2. Step 2: Convert to fraction form
    170.08/234.81 = 111.09/x
  3. Step 3: Cross multiply
    170.08x = 234.81 × 111.09
  4. Step 4: Simplify right side
    170.08x = 26,085.04
  5. Step 5: Solve for x
    x = 26,085.04/170.08
  6. Step 6: Final answer
    x = 153.37

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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.