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Finding the Fourth Proportional to 603.96, 906.18 and 279.48

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Solution

The fourth proportional to 603.96, 906.18 and 279.48 is: 419.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.96 : 906.18 = 279.48 : x
  2. Step 2: Convert to fraction form
    603.96/906.18 = 279.48/x
  3. Step 3: Cross multiply
    603.96x = 906.18 × 279.48
  4. Step 4: Simplify right side
    603.96x = 253,259.19
  5. Step 5: Solve for x
    x = 253,259.19/603.96
  6. Step 6: Final answer
    x = 419.33

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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.