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Finding the Fourth Proportional to 492.94, 739.17 and 281.84

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Solution

The fourth proportional to 492.94, 739.17 and 281.84 is: 422.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    492.94 : 739.17 = 281.84 : x
  2. Step 2: Convert to fraction form
    492.94/739.17 = 281.84/x
  3. Step 3: Cross multiply
    492.94x = 739.17 × 281.84
  4. Step 4: Simplify right side
    492.94x = 208,327.67
  5. Step 5: Solve for x
    x = 208,327.67/492.94
  6. Step 6: Final answer
    x = 422.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.