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Finding the Fourth Proportional to 683.01, 1,022.19 and 423.18

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Solution

The fourth proportional to 683.01, 1,022.19 and 423.18 is: 633.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    683.01 : 1,022.19 = 423.18 : x
  2. Step 2: Convert to fraction form
    683.01/1,022.19 = 423.18/x
  3. Step 3: Cross multiply
    683.01x = 1,022.19 × 423.18
  4. Step 4: Simplify right side
    683.01x = 432,570.36
  5. Step 5: Solve for x
    x = 432,570.36/683.01
  6. Step 6: Final answer
    x = 633.33

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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.