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Finding the Fourth Proportional to 394.58, 590.65 and 336.26

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Solution

The fourth proportional to 394.58, 590.65 and 336.26 is: 503.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.58 : 590.65 = 336.26 : x
  2. Step 2: Convert to fraction form
    394.58/590.65 = 336.26/x
  3. Step 3: Cross multiply
    394.58x = 590.65 × 336.26
  4. Step 4: Simplify right side
    394.58x = 198,611.97
  5. Step 5: Solve for x
    x = 198,611.97/394.58
  6. Step 6: Final answer
    x = 503.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.