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Finding the Fourth Proportional to 130.46, 194.33 and 126.09

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Solution

The fourth proportional to 130.46, 194.33 and 126.09 is: 187.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.46 : 194.33 = 126.09 : x
  2. Step 2: Convert to fraction form
    130.46/194.33 = 126.09/x
  3. Step 3: Cross multiply
    130.46x = 194.33 × 126.09
  4. Step 4: Simplify right side
    130.46x = 24,503.38
  5. Step 5: Solve for x
    x = 24,503.38/130.46
  6. Step 6: Final answer
    x = 187.83

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.