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Finding the Fourth Proportional to 490.00, 734.82 and 143.24

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Solution

The fourth proportional to 490.00, 734.82 and 143.24 is: 214.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.00 : 734.82 = 143.24 : x
  2. Step 2: Convert to fraction form
    490.00/734.82 = 143.24/x
  3. Step 3: Cross multiply
    490.00x = 734.82 × 143.24
  4. Step 4: Simplify right side
    490.00x = 105,255.26
  5. Step 5: Solve for x
    x = 105,255.26/490.00
  6. Step 6: Final answer
    x = 214.81

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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.