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Finding the Fourth Proportional to 603.62, 905.21 and 223.19

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Solution

The fourth proportional to 603.62, 905.21 and 223.19 is: 334.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.62 : 905.21 = 223.19 : x
  2. Step 2: Convert to fraction form
    603.62/905.21 = 223.19/x
  3. Step 3: Cross multiply
    603.62x = 905.21 × 223.19
  4. Step 4: Simplify right side
    603.62x = 202,033.82
  5. Step 5: Solve for x
    x = 202,033.82/603.62
  6. Step 6: Final answer
    x = 334.70

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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.