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Finding the Fourth Proportional to 603.76, 906 and 279.24

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Solution

The fourth proportional to 603.76, 906 and 279.24 is: 419.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.76 : 906 = 279.24 : x
  2. Step 2: Convert to fraction form
    603.76/906 = 279.24/x
  3. Step 3: Cross multiply
    603.76x = 906 × 279.24
  4. Step 4: Simplify right side
    603.76x = 252,991.44
  5. Step 5: Solve for x
    x = 252,991.44/603.76
  6. Step 6: Final answer
    x = 419.03

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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.