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Finding the Fourth Proportional to 360.44, 500.78 and 356.12

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Solution

The fourth proportional to 360.44, 500.78 and 356.12 is: 494.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.44 : 500.78 = 356.12 : x
  2. Step 2: Convert to fraction form
    360.44/500.78 = 356.12/x
  3. Step 3: Cross multiply
    360.44x = 500.78 × 356.12
  4. Step 4: Simplify right side
    360.44x = 178,337.77
  5. Step 5: Solve for x
    x = 178,337.77/360.44
  6. Step 6: Final answer
    x = 494.78

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.