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Finding the Fourth Proportional to 353.82, 488.35 and 206.48

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Solution

The fourth proportional to 353.82, 488.35 and 206.48 is: 284.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.82 : 488.35 = 206.48 : x
  2. Step 2: Convert to fraction form
    353.82/488.35 = 206.48/x
  3. Step 3: Cross multiply
    353.82x = 488.35 × 206.48
  4. Step 4: Simplify right side
    353.82x = 100,832.07
  5. Step 5: Solve for x
    x = 100,832.07/353.82
  6. Step 6: Final answer
    x = 284.99

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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.