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Finding the Fourth Proportional to 352.86, 486.66 and 205.44

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Solution

The fourth proportional to 352.86, 486.66 and 205.44 is: 283.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.86 : 486.66 = 205.44 : x
  2. Step 2: Convert to fraction form
    352.86/486.66 = 205.44/x
  3. Step 3: Cross multiply
    352.86x = 486.66 × 205.44
  4. Step 4: Simplify right side
    352.86x = 99,979.43
  5. Step 5: Solve for x
    x = 99,979.43/352.86
  6. Step 6: Final answer
    x = 283.34

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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.