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Finding the Fourth Proportional to 471.10, 705.25 and 349.90

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Solution

The fourth proportional to 471.10, 705.25 and 349.90 is: 523.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.10 : 705.25 = 349.90 : x
  2. Step 2: Convert to fraction form
    471.10/705.25 = 349.90/x
  3. Step 3: Cross multiply
    471.10x = 705.25 × 349.90
  4. Step 4: Simplify right side
    471.10x = 246,766.98
  5. Step 5: Solve for x
    x = 246,766.98/471.10
  6. Step 6: Final answer
    x = 523.81

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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.