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Finding the Fourth Proportional to 684.43, 944.44 and 385.63

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Solution

The fourth proportional to 684.43, 944.44 and 385.63 is: 532.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    684.43 : 944.44 = 385.63 : x
  2. Step 2: Convert to fraction form
    684.43/944.44 = 385.63/x
  3. Step 3: Cross multiply
    684.43x = 944.44 × 385.63
  4. Step 4: Simplify right side
    684.43x = 364,201.07
  5. Step 5: Solve for x
    x = 364,201.07/684.43
  6. Step 6: Final answer
    x = 532.13

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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.