Finding the Fourth Proportional to 286.23, 395.15 and 197.84
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Solution
The fourth proportional to 286.23, 395.15 and 197.84 is: 273.12
Step by Step Solution
- Step 1: Write the proportion equation
286.23 : 395.15 = 197.84 : x - Step 2: Convert to fraction form
286.23/395.15 = 197.84/x - Step 3: Cross multiply
286.23x = 395.15 × 197.84 - Step 4: Simplify right side
286.23x = 78,174.99 - Step 5: Solve for x
x = 78,174.99/286.23 - Step 6: Final answer
x = 273.12
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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.