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Finding the Fourth Proportional to 603.53, 905.45 and 238.19

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Solution

The fourth proportional to 603.53, 905.45 and 238.19 is: 357.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.53 : 905.45 = 238.19 : x
  2. Step 2: Convert to fraction form
    603.53/905.45 = 238.19/x
  3. Step 3: Cross multiply
    603.53x = 905.45 × 238.19
  4. Step 4: Simplify right side
    603.53x = 215,663.42
  5. Step 5: Solve for x
    x = 215,663.42/603.53
  6. Step 6: Final answer
    x = 357.34

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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.