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Finding the Fourth Proportional to 594.21, 820.05 and 394.70

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Solution

The fourth proportional to 594.21, 820.05 and 394.70 is: 544.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    594.21 : 820.05 = 394.70 : x
  2. Step 2: Convert to fraction form
    594.21/820.05 = 394.70/x
  3. Step 3: Cross multiply
    594.21x = 820.05 × 394.70
  4. Step 4: Simplify right side
    594.21x = 323,671.57
  5. Step 5: Solve for x
    x = 323,671.57/594.21
  6. Step 6: Final answer
    x = 544.71

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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.