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Finding the Fourth Proportional to 352.12, 485.82 and 248.44

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Solution

The fourth proportional to 352.12, 485.82 and 248.44 is: 342.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.12 : 485.82 = 248.44 : x
  2. Step 2: Convert to fraction form
    352.12/485.82 = 248.44/x
  3. Step 3: Cross multiply
    352.12x = 485.82 × 248.44
  4. Step 4: Simplify right side
    352.12x = 120,697.12
  5. Step 5: Solve for x
    x = 120,697.12/352.12
  6. Step 6: Final answer
    x = 342.77

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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.