Finding the Fourth Proportional to 194.12, 290.99 and 84.38
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Solution
The fourth proportional to 194.12, 290.99 and 84.38 is: 126.49
Step by Step Solution
- Step 1: Write the proportion equation
194.12 : 290.99 = 84.38 : x - Step 2: Convert to fraction form
194.12/290.99 = 84.38/x - Step 3: Cross multiply
194.12x = 290.99 × 84.38 - Step 4: Simplify right side
194.12x = 24,553.74 - Step 5: Solve for x
x = 24,553.74/194.12 - Step 6: Final answer
x = 126.49
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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.