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Finding the Fourth Proportional to 1,333.99, 1,999.23 and 716.97

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Solution

The fourth proportional to 1,333.99, 1,999.23 and 716.97 is: 1,074.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,333.99 : 1,999.23 = 716.97 : x
  2. Step 2: Convert to fraction form
    1,333.99/1,999.23 = 716.97/x
  3. Step 3: Cross multiply
    1,333.99x = 1,999.23 × 716.97
  4. Step 4: Simplify right side
    1,333.99x = 1,433,387.93
  5. Step 5: Solve for x
    x = 1,433,387.93/1,333.99
  6. Step 6: Final answer
    x = 1,074.51

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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.