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Finding the Fourth Proportional to 493.43, 741.02 and 426.06

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Solution

The fourth proportional to 493.43, 741.02 and 426.06 is: 639.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.43 : 741.02 = 426.06 : x
  2. Step 2: Convert to fraction form
    493.43/741.02 = 426.06/x
  3. Step 3: Cross multiply
    493.43x = 741.02 × 426.06
  4. Step 4: Simplify right side
    493.43x = 315,716.85
  5. Step 5: Solve for x
    x = 315,716.85/493.43
  6. Step 6: Final answer
    x = 639.85

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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.