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Finding the Fourth Proportional to 684.26, 944.08 and 422.43

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Solution

The fourth proportional to 684.26, 944.08 and 422.43 is: 582.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    684.26 : 944.08 = 422.43 : x
  2. Step 2: Convert to fraction form
    684.26/944.08 = 422.43/x
  3. Step 3: Cross multiply
    684.26x = 944.08 × 422.43
  4. Step 4: Simplify right side
    684.26x = 398,807.71
  5. Step 5: Solve for x
    x = 398,807.71/684.26
  6. Step 6: Final answer
    x = 582.83

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1.5x scale

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.