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Finding the Fourth Proportional to 603.36, 905.08 and 278.68

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Solution

The fourth proportional to 603.36, 905.08 and 278.68 is: 418.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.36 : 905.08 = 278.68 : x
  2. Step 2: Convert to fraction form
    603.36/905.08 = 278.68/x
  3. Step 3: Cross multiply
    603.36x = 905.08 × 278.68
  4. Step 4: Simplify right side
    603.36x = 252,227.69
  5. Step 5: Solve for x
    x = 252,227.69/603.36
  6. Step 6: Final answer
    x = 418.04

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Double scale
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Similar ratio
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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.