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Finding the Fourth Proportional to 169.81, 234.58 and 134.72

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Solution

The fourth proportional to 169.81, 234.58 and 134.72 is: 186.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.81 : 234.58 = 134.72 : x
  2. Step 2: Convert to fraction form
    169.81/234.58 = 134.72/x
  3. Step 3: Cross multiply
    169.81x = 234.58 × 134.72
  4. Step 4: Simplify right side
    169.81x = 31,602.62
  5. Step 5: Solve for x
    x = 31,602.62/169.81
  6. Step 6: Final answer
    x = 186.11

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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.