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Finding the Fourth Proportional to 603.54, 905.21 and 170.59

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Solution

The fourth proportional to 603.54, 905.21 and 170.59 is: 255.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.54 : 905.21 = 170.59 : x
  2. Step 2: Convert to fraction form
    603.54/905.21 = 170.59/x
  3. Step 3: Cross multiply
    603.54x = 905.21 × 170.59
  4. Step 4: Simplify right side
    603.54x = 154,419.77
  5. Step 5: Solve for x
    x = 154,419.77/603.54
  6. Step 6: Final answer
    x = 255.86

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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.