Finding the Fourth Proportional to 197.74, 296.26 and 129.09
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Solution
The fourth proportional to 197.74, 296.26 and 129.09 is: 193.41
Step by Step Solution
- Step 1: Write the proportion equation
197.74 : 296.26 = 129.09 : x - Step 2: Convert to fraction form
197.74/296.26 = 129.09/x - Step 3: Cross multiply
197.74x = 296.26 × 129.09 - Step 4: Simplify right side
197.74x = 38,244.99 - Step 5: Solve for x
x = 38,244.99/197.74 - Step 6: Final answer
x = 193.41
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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.