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Finding the Fourth Proportional to 684.05, 944.00 and 389.32

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Solution

The fourth proportional to 684.05, 944.00 and 389.32 is: 537.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    684.05 : 944.00 = 389.32 : x
  2. Step 2: Convert to fraction form
    684.05/944.00 = 389.32/x
  3. Step 3: Cross multiply
    684.05x = 944.00 × 389.32
  4. Step 4: Simplify right side
    684.05x = 367,516.33
  5. Step 5: Solve for x
    x = 367,516.33/684.05
  6. Step 6: Final answer
    x = 537.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.