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Finding the Fourth Proportional to 683.89, 1,025.66 and 245.07

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Solution

The fourth proportional to 683.89, 1,025.66 and 245.07 is: 367.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    683.89 : 1,025.66 = 245.07 : x
  2. Step 2: Convert to fraction form
    683.89/1,025.66 = 245.07/x
  3. Step 3: Cross multiply
    683.89x = 1,025.66 × 245.07
  4. Step 4: Simplify right side
    683.89x = 251,357.27
  5. Step 5: Solve for x
    x = 251,357.27/683.89
  6. Step 6: Final answer
    x = 367.54

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1.5x scale

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.