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Finding the Fourth Proportional to 335.76, 503.62 and 107.76

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Solution

The fourth proportional to 335.76, 503.62 and 107.76 is: 161.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.76 : 503.62 = 107.76 : x
  2. Step 2: Convert to fraction form
    335.76/503.62 = 107.76/x
  3. Step 3: Cross multiply
    335.76x = 503.62 × 107.76
  4. Step 4: Simplify right side
    335.76x = 54,270.09
  5. Step 5: Solve for x
    x = 54,270.09/335.76
  6. Step 6: Final answer
    x = 161.63

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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.