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Finding the Fourth Proportional to 490.23, 676.53 and 293.76

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Solution

The fourth proportional to 490.23, 676.53 and 293.76 is: 405.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.23 : 676.53 = 293.76 : x
  2. Step 2: Convert to fraction form
    490.23/676.53 = 293.76/x
  3. Step 3: Cross multiply
    490.23x = 676.53 × 293.76
  4. Step 4: Simplify right side
    490.23x = 198,737.45
  5. Step 5: Solve for x
    x = 198,737.45/490.23
  6. Step 6: Final answer
    x = 405.40

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.