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Finding the Fourth Proportional to 320.60, 442.44 and 196.32

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Solution

The fourth proportional to 320.60, 442.44 and 196.32 is: 270.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    320.60 : 442.44 = 196.32 : x
  2. Step 2: Convert to fraction form
    320.60/442.44 = 196.32/x
  3. Step 3: Cross multiply
    320.60x = 442.44 × 196.32
  4. Step 4: Simplify right side
    320.60x = 86,857.61
  5. Step 5: Solve for x
    x = 86,857.61/320.60
  6. Step 6: Final answer
    x = 270.92

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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.