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Finding the Fourth Proportional to 356.15, 492.30 and 327.44

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Solution

The fourth proportional to 356.15, 492.30 and 327.44 is: 452.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.15 : 492.30 = 327.44 : x
  2. Step 2: Convert to fraction form
    356.15/492.30 = 327.44/x
  3. Step 3: Cross multiply
    356.15x = 492.30 × 327.44
  4. Step 4: Simplify right side
    356.15x = 161,200.86
  5. Step 5: Solve for x
    x = 161,200.86/356.15
  6. Step 6: Final answer
    x = 452.62

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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.