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Finding the Fourth Proportional to 683.83, 943.18 and 447.41

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Solution

The fourth proportional to 683.83, 943.18 and 447.41 is: 617.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    683.83 : 943.18 = 447.41 : x
  2. Step 2: Convert to fraction form
    683.83/943.18 = 447.41/x
  3. Step 3: Cross multiply
    683.83x = 943.18 × 447.41
  4. Step 4: Simplify right side
    683.83x = 421,988.16
  5. Step 5: Solve for x
    x = 421,988.16/683.83
  6. Step 6: Final answer
    x = 617.10

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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.