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Finding the Fourth Proportional to 603.66, 905.48 and 170.81

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Solution

The fourth proportional to 603.66, 905.48 and 170.81 is: 256.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.66 : 905.48 = 170.81 : x
  2. Step 2: Convert to fraction form
    603.66/905.48 = 170.81/x
  3. Step 3: Cross multiply
    603.66x = 905.48 × 170.81
  4. Step 4: Simplify right side
    603.66x = 154,665.04
  5. Step 5: Solve for x
    x = 154,665.04/603.66
  6. Step 6: Final answer
    x = 256.21

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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.