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Finding the Fourth Proportional to 170.18, 234.51 and 118.34

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Solution

The fourth proportional to 170.18, 234.51 and 118.34 is: 163.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.18 : 234.51 = 118.34 : x
  2. Step 2: Convert to fraction form
    170.18/234.51 = 118.34/x
  3. Step 3: Cross multiply
    170.18x = 234.51 × 118.34
  4. Step 4: Simplify right side
    170.18x = 27,751.91
  5. Step 5: Solve for x
    x = 27,751.91/170.18
  6. Step 6: Final answer
    x = 163.07

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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.