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Finding the Fourth Proportional to 336.67, 505.04 and 131.29

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Solution

The fourth proportional to 336.67, 505.04 and 131.29 is: 196.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.67 : 505.04 = 131.29 : x
  2. Step 2: Convert to fraction form
    336.67/505.04 = 131.29/x
  3. Step 3: Cross multiply
    336.67x = 505.04 × 131.29
  4. Step 4: Simplify right side
    336.67x = 66,306.70
  5. Step 5: Solve for x
    x = 66,306.70/336.67
  6. Step 6: Final answer
    x = 196.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.