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Finding the Fourth Proportional to 336.96, 503.42 and 220.46

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Solution

The fourth proportional to 336.96, 503.42 and 220.46 is: 329.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.96 : 503.42 = 220.46 : x
  2. Step 2: Convert to fraction form
    336.96/503.42 = 220.46/x
  3. Step 3: Cross multiply
    336.96x = 503.42 × 220.46
  4. Step 4: Simplify right side
    336.96x = 110,980.35
  5. Step 5: Solve for x
    x = 110,980.35/336.96
  6. Step 6: Final answer
    x = 329.36

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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.