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Finding the Fourth Proportional to 297.43, 445.42 and 284.26

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Solution

The fourth proportional to 297.43, 445.42 and 284.26 is: 425.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.43 : 445.42 = 284.26 : x
  2. Step 2: Convert to fraction form
    297.43/445.42 = 284.26/x
  3. Step 3: Cross multiply
    297.43x = 445.42 × 284.26
  4. Step 4: Simplify right side
    297.43x = 126,615.09
  5. Step 5: Solve for x
    x = 126,615.09/297.43
  6. Step 6: Final answer
    x = 425.70

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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.