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Finding the Fourth Proportional to 604.43, 906.86 and 279.56

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Solution

The fourth proportional to 604.43, 906.86 and 279.56 is: 419.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.43 : 906.86 = 279.56 : x
  2. Step 2: Convert to fraction form
    604.43/906.86 = 279.56/x
  3. Step 3: Cross multiply
    604.43x = 906.86 × 279.56
  4. Step 4: Simplify right side
    604.43x = 253,524.75
  5. Step 5: Solve for x
    x = 253,524.75/604.43
  6. Step 6: Final answer
    x = 419.45

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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.