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Finding the Fourth Proportional to 394.25, 590.98 and 188.76

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Solution

The fourth proportional to 394.25, 590.98 and 188.76 is: 282.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.25 : 590.98 = 188.76 : x
  2. Step 2: Convert to fraction form
    394.25/590.98 = 188.76/x
  3. Step 3: Cross multiply
    394.25x = 590.98 × 188.76
  4. Step 4: Simplify right side
    394.25x = 111,553.38
  5. Step 5: Solve for x
    x = 111,553.38/394.25
  6. Step 6: Final answer
    x = 282.95

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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.