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Finding the Fourth Proportional to 402.11, 603.26 and 171.02

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Solution

The fourth proportional to 402.11, 603.26 and 171.02 is: 256.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.11 : 603.26 = 171.02 : x
  2. Step 2: Convert to fraction form
    402.11/603.26 = 171.02/x
  3. Step 3: Cross multiply
    402.11x = 603.26 × 171.02
  4. Step 4: Simplify right side
    402.11x = 103,168.67
  5. Step 5: Solve for x
    x = 103,168.67/402.11
  6. Step 6: Final answer
    x = 256.57

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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.