Finding the Fourth Proportional to 379.26, 568.95 and 129.07
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Solution
The fourth proportional to 379.26, 568.95 and 129.07 is: 193.63
Step by Step Solution
- Step 1: Write the proportion equation
379.26 : 568.95 = 129.07 : x - Step 2: Convert to fraction form
379.26/568.95 = 129.07/x - Step 3: Cross multiply
379.26x = 568.95 × 129.07 - Step 4: Simplify right side
379.26x = 73,434.38 - Step 5: Solve for x
x = 73,434.38/379.26 - Step 6: Final answer
x = 193.63
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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.