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Finding the Fourth Proportional to 1,033.62, 1,426.32 and 683.70

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Solution

The fourth proportional to 1,033.62, 1,426.32 and 683.70 is: 943.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,033.62 : 1,426.32 = 683.70 : x
  2. Step 2: Convert to fraction form
    1,033.62/1,426.32 = 683.70/x
  3. Step 3: Cross multiply
    1,033.62x = 1,426.32 × 683.70
  4. Step 4: Simplify right side
    1,033.62x = 975,174.98
  5. Step 5: Solve for x
    x = 975,174.98/1,033.62
  6. Step 6: Final answer
    x = 943.46

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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.