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Finding the Fourth Proportional to 684.03, 1,025.81 and 197.09

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Solution

The fourth proportional to 684.03, 1,025.81 and 197.09 is: 295.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    684.03 : 1,025.81 = 197.09 : x
  2. Step 2: Convert to fraction form
    684.03/1,025.81 = 197.09/x
  3. Step 3: Cross multiply
    684.03x = 1,025.81 × 197.09
  4. Step 4: Simplify right side
    684.03x = 202,176.89
  5. Step 5: Solve for x
    x = 202,176.89/684.03
  6. Step 6: Final answer
    x = 295.57

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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.