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Finding the Fourth Proportional to 490.09, 676.34 and 293.53

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Solution

The fourth proportional to 490.09, 676.34 and 293.53 is: 405.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.09 : 676.34 = 293.53 : x
  2. Step 2: Convert to fraction form
    490.09/676.34 = 293.53/x
  3. Step 3: Cross multiply
    490.09x = 676.34 × 293.53
  4. Step 4: Simplify right side
    490.09x = 198,526.08
  5. Step 5: Solve for x
    x = 198,526.08/490.09
  6. Step 6: Final answer
    x = 405.08

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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.