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Finding the Fourth Proportional to 684.50, 944.01 and 445.12

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Solution

The fourth proportional to 684.50, 944.01 and 445.12 is: 613.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    684.50 : 944.01 = 445.12 : x
  2. Step 2: Convert to fraction form
    684.50/944.01 = 445.12/x
  3. Step 3: Cross multiply
    684.50x = 944.01 × 445.12
  4. Step 4: Simplify right side
    684.50x = 420,195.51
  5. Step 5: Solve for x
    x = 420,195.51/684.50
  6. Step 6: Final answer
    x = 613.88

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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.