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Finding the Fourth Proportional to 418.44, 576.90 and 335.64

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Solution

The fourth proportional to 418.44, 576.90 and 335.64 is: 462.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    418.44 : 576.90 = 335.64 : x
  2. Step 2: Convert to fraction form
    418.44/576.90 = 335.64/x
  3. Step 3: Cross multiply
    418.44x = 576.90 × 335.64
  4. Step 4: Simplify right side
    418.44x = 193,630.72
  5. Step 5: Solve for x
    x = 193,630.72/418.44
  6. Step 6: Final answer
    x = 462.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.