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Finding the Fourth Proportional to 603.43, 905.59 and 238.47

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Solution

The fourth proportional to 603.43, 905.59 and 238.47 is: 357.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.43 : 905.59 = 238.47 : x
  2. Step 2: Convert to fraction form
    603.43/905.59 = 238.47/x
  3. Step 3: Cross multiply
    603.43x = 905.59 × 238.47
  4. Step 4: Simplify right side
    603.43x = 215,956.05
  5. Step 5: Solve for x
    x = 215,956.05/603.43
  6. Step 6: Final answer
    x = 357.88

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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.