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Finding the Fourth Proportional to 336.39, 504.15 and 220.89

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Solution

The fourth proportional to 336.39, 504.15 and 220.89 is: 331.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.39 : 504.15 = 220.89 : x
  2. Step 2: Convert to fraction form
    336.39/504.15 = 220.89/x
  3. Step 3: Cross multiply
    336.39x = 504.15 × 220.89
  4. Step 4: Simplify right side
    336.39x = 111,361.69
  5. Step 5: Solve for x
    x = 111,361.69/336.39
  6. Step 6: Final answer
    x = 331.05

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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.