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Finding the Fourth Proportional to 402.41, 603.79 and 171.26

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Solution

The fourth proportional to 402.41, 603.79 and 171.26 is: 256.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.41 : 603.79 = 171.26 : x
  2. Step 2: Convert to fraction form
    402.41/603.79 = 171.26/x
  3. Step 3: Cross multiply
    402.41x = 603.79 × 171.26
  4. Step 4: Simplify right side
    402.41x = 103,406.16
  5. Step 5: Solve for x
    x = 103,406.16/402.41
  6. Step 6: Final answer
    x = 256.97

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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.