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Finding the Fourth Proportional to 683.63, 1,025.49 and 250.78

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Solution

The fourth proportional to 683.63, 1,025.49 and 250.78 is: 376.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    683.63 : 1,025.49 = 250.78 : x
  2. Step 2: Convert to fraction form
    683.63/1,025.49 = 250.78/x
  3. Step 3: Cross multiply
    683.63x = 1,025.49 × 250.78
  4. Step 4: Simplify right side
    683.63x = 257,172.38
  5. Step 5: Solve for x
    x = 257,172.38/683.63
  6. Step 6: Final answer
    x = 376.19

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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.