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Finding the Fourth Proportional to 360.46, 496.90 and 281.60

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Solution

The fourth proportional to 360.46, 496.90 and 281.60 is: 388.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.46 : 496.90 = 281.60 : x
  2. Step 2: Convert to fraction form
    360.46/496.90 = 281.60/x
  3. Step 3: Cross multiply
    360.46x = 496.90 × 281.60
  4. Step 4: Simplify right side
    360.46x = 139,927.58
  5. Step 5: Solve for x
    x = 139,927.58/360.46
  6. Step 6: Final answer
    x = 388.19

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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.