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Finding the Fourth Proportional to 336.80, 503.10 and 331.04

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Solution

The fourth proportional to 336.80, 503.10 and 331.04 is: 494.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.80 : 503.10 = 331.04 : x
  2. Step 2: Convert to fraction form
    336.80/503.10 = 331.04/x
  3. Step 3: Cross multiply
    336.80x = 503.10 × 331.04
  4. Step 4: Simplify right side
    336.80x = 166,546.22
  5. Step 5: Solve for x
    x = 166,546.22/336.80
  6. Step 6: Final answer
    x = 494.50

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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.