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Finding the Fourth Proportional to 1,619.63, 2,430.26 and 796.94

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Solution

The fourth proportional to 1,619.63, 2,430.26 and 796.94 is: 1,195.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619.63 : 2,430.26 = 796.94 : x
  2. Step 2: Convert to fraction form
    1,619.63/2,430.26 = 796.94/x
  3. Step 3: Cross multiply
    1,619.63x = 2,430.26 × 796.94
  4. Step 4: Simplify right side
    1,619.63x = 1,936,771.40
  5. Step 5: Solve for x
    x = 1,936,771.40/1,619.63
  6. Step 6: Final answer
    x = 1,195.81

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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.