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Finding the Fourth Proportional to 394.52, 594.55 and 355.52

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Solution

The fourth proportional to 394.52, 594.55 and 355.52 is: 535.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.52 : 594.55 = 355.52 : x
  2. Step 2: Convert to fraction form
    394.52/594.55 = 355.52/x
  3. Step 3: Cross multiply
    394.52x = 594.55 × 355.52
  4. Step 4: Simplify right side
    394.52x = 211,374.42
  5. Step 5: Solve for x
    x = 211,374.42/394.52
  6. Step 6: Final answer
    x = 535.78

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.