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Finding the Fourth Proportional to 683.84, 943.81 and 434.90

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Solution

The fourth proportional to 683.84, 943.81 and 434.90 is: 600.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    683.84 : 943.81 = 434.90 : x
  2. Step 2: Convert to fraction form
    683.84/943.81 = 434.90/x
  3. Step 3: Cross multiply
    683.84x = 943.81 × 434.90
  4. Step 4: Simplify right side
    683.84x = 410,458.43
  5. Step 5: Solve for x
    x = 410,458.43/683.84
  6. Step 6: Final answer
    x = 600.23

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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.