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Finding the Fourth Proportional to 683.71, 1,025.09 and 375.71

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Solution

The fourth proportional to 683.71, 1,025.09 and 375.71 is: 563.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    683.71 : 1,025.09 = 375.71 : x
  2. Step 2: Convert to fraction form
    683.71/1,025.09 = 375.71/x
  3. Step 3: Cross multiply
    683.71x = 1,025.09 × 375.71
  4. Step 4: Simplify right side
    683.71x = 385,130.97
  5. Step 5: Solve for x
    x = 385,130.97/683.71
  6. Step 6: Final answer
    x = 563.30

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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.