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Finding the Fourth Proportional to 601.43, 826.20 and 490.56

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Solution

The fourth proportional to 601.43, 826.20 and 490.56 is: 673.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    601.43 : 826.20 = 490.56 : x
  2. Step 2: Convert to fraction form
    601.43/826.20 = 490.56/x
  3. Step 3: Cross multiply
    601.43x = 826.20 × 490.56
  4. Step 4: Simplify right side
    601.43x = 405,297.57
  5. Step 5: Solve for x
    x = 405,297.57/601.43
  6. Step 6: Final answer
    x = 673.90

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.