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Finding the Fourth Proportional to 1,296.99, 1,789.61 and 737.43

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Solution

The fourth proportional to 1,296.99, 1,789.61 and 737.43 is: 1,017.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296.99 : 1,789.61 = 737.43 : x
  2. Step 2: Convert to fraction form
    1,296.99/1,789.61 = 737.43/x
  3. Step 3: Cross multiply
    1,296.99x = 1,789.61 × 737.43
  4. Step 4: Simplify right side
    1,296.99x = 1,319,707.23
  5. Step 5: Solve for x
    x = 1,319,707.23/1,296.99
  6. Step 6: Final answer
    x = 1,017.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.