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Finding the Fourth Proportional to 1,329.43, 1,834.70 and 739.97

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Solution

The fourth proportional to 1,329.43, 1,834.70 and 739.97 is: 1,021.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329.43 : 1,834.70 = 739.97 : x
  2. Step 2: Convert to fraction form
    1,329.43/1,834.70 = 739.97/x
  3. Step 3: Cross multiply
    1,329.43x = 1,834.70 × 739.97
  4. Step 4: Simplify right side
    1,329.43x = 1,357,622.96
  5. Step 5: Solve for x
    x = 1,357,622.96/1,329.43
  6. Step 6: Final answer
    x = 1,021.21

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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.