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Finding the Fourth Proportional to 170.37, 234.90 and 129.06

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Solution

The fourth proportional to 170.37, 234.90 and 129.06 is: 177.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.37 : 234.90 = 129.06 : x
  2. Step 2: Convert to fraction form
    170.37/234.90 = 129.06/x
  3. Step 3: Cross multiply
    170.37x = 234.90 × 129.06
  4. Step 4: Simplify right side
    170.37x = 30,316.19
  5. Step 5: Solve for x
    x = 30,316.19/170.37
  6. Step 6: Final answer
    x = 177.94

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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.