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Finding the Fourth Proportional to 603.18, 905.85 and 361.26

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Solution

The fourth proportional to 603.18, 905.85 and 361.26 is: 542.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.18 : 905.85 = 361.26 : x
  2. Step 2: Convert to fraction form
    603.18/905.85 = 361.26/x
  3. Step 3: Cross multiply
    603.18x = 905.85 × 361.26
  4. Step 4: Simplify right side
    603.18x = 327,247.37
  5. Step 5: Solve for x
    x = 327,247.37/603.18
  6. Step 6: Final answer
    x = 542.54

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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.