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Finding the Fourth Proportional to 603.88, 906.24 and 279.46

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Solution

The fourth proportional to 603.88, 906.24 and 279.46 is: 419.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.88 : 906.24 = 279.46 : x
  2. Step 2: Convert to fraction form
    603.88/906.24 = 279.46/x
  3. Step 3: Cross multiply
    603.88x = 906.24 × 279.46
  4. Step 4: Simplify right side
    603.88x = 253,257.83
  5. Step 5: Solve for x
    x = 253,257.83/603.88
  6. Step 6: Final answer
    x = 419.38

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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.