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Finding the Fourth Proportional to 134.91, 187.43 and 133.65

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Solution

The fourth proportional to 134.91, 187.43 and 133.65 is: 185.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.91 : 187.43 = 133.65 : x
  2. Step 2: Convert to fraction form
    134.91/187.43 = 133.65/x
  3. Step 3: Cross multiply
    134.91x = 187.43 × 133.65
  4. Step 4: Simplify right side
    134.91x = 25,048.41
  5. Step 5: Solve for x
    x = 25,048.41/134.91
  6. Step 6: Final answer
    x = 185.67

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.