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Finding the Fourth Proportional to 604.80, 834.75 and 394.68

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Solution

The fourth proportional to 604.80, 834.75 and 394.68 is: 544.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.80 : 834.75 = 394.68 : x
  2. Step 2: Convert to fraction form
    604.80/834.75 = 394.68/x
  3. Step 3: Cross multiply
    604.80x = 834.75 × 394.68
  4. Step 4: Simplify right side
    604.80x = 329,459.13
  5. Step 5: Solve for x
    x = 329,459.13/604.80
  6. Step 6: Final answer
    x = 544.74

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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.