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Finding the Fourth Proportional to 347.28, 520.11 and 173.41

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Solution

The fourth proportional to 347.28, 520.11 and 173.41 is: 259.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.28 : 520.11 = 173.41 : x
  2. Step 2: Convert to fraction form
    347.28/520.11 = 173.41/x
  3. Step 3: Cross multiply
    347.28x = 520.11 × 173.41
  4. Step 4: Simplify right side
    347.28x = 90,192.28
  5. Step 5: Solve for x
    x = 90,192.28/347.28
  6. Step 6: Final answer
    x = 259.71

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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.