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Finding the Fourth Proportional to 335.25, 461.82 and 285.30

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Solution

The fourth proportional to 335.25, 461.82 and 285.30 is: 393.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.25 : 461.82 = 285.30 : x
  2. Step 2: Convert to fraction form
    335.25/461.82 = 285.30/x
  3. Step 3: Cross multiply
    335.25x = 461.82 × 285.30
  4. Step 4: Simplify right side
    335.25x = 131,757.48
  5. Step 5: Solve for x
    x = 131,757.48/335.25
  6. Step 6: Final answer
    x = 393.01

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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.