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Finding the Fourth Proportional to 336.75, 505.12 and 131.08

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Solution

The fourth proportional to 336.75, 505.12 and 131.08 is: 196.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.75 : 505.12 = 131.08 : x
  2. Step 2: Convert to fraction form
    336.75/505.12 = 131.08/x
  3. Step 3: Cross multiply
    336.75x = 505.12 × 131.08
  4. Step 4: Simplify right side
    336.75x = 66,211.13
  5. Step 5: Solve for x
    x = 66,211.13/336.75
  6. Step 6: Final answer
    x = 196.62

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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.