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Finding the Fourth Proportional to 684.43, 944.30 and 474.37

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Solution

The fourth proportional to 684.43, 944.30 and 474.37 is: 654.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    684.43 : 944.30 = 474.37 : x
  2. Step 2: Convert to fraction form
    684.43/944.30 = 474.37/x
  3. Step 3: Cross multiply
    684.43x = 944.30 × 474.37
  4. Step 4: Simplify right side
    684.43x = 447,946.42
  5. Step 5: Solve for x
    x = 447,946.42/684.43
  6. Step 6: Final answer
    x = 654.48

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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.