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Finding the Fourth Proportional to 603.39, 905.09 and 314.76

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Solution

The fourth proportional to 603.39, 905.09 and 314.76 is: 472.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.39 : 905.09 = 314.76 : x
  2. Step 2: Convert to fraction form
    603.39/905.09 = 314.76/x
  3. Step 3: Cross multiply
    603.39x = 905.09 × 314.76
  4. Step 4: Simplify right side
    603.39x = 284,884.55
  5. Step 5: Solve for x
    x = 284,884.55/603.39
  6. Step 6: Final answer
    x = 472.14

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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.