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Finding the Fourth Proportional to 336.71, 505.16 and 131.29

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Solution

The fourth proportional to 336.71, 505.16 and 131.29 is: 196.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.71 : 505.16 = 131.29 : x
  2. Step 2: Convert to fraction form
    336.71/505.16 = 131.29/x
  3. Step 3: Cross multiply
    336.71x = 505.16 × 131.29
  4. Step 4: Simplify right side
    336.71x = 66,322.46
  5. Step 5: Solve for x
    x = 66,322.46/336.71
  6. Step 6: Final answer
    x = 196.97

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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.