Finding the Fourth Proportional to 129.29, 193.94 and 37.99
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Solution
The fourth proportional to 129.29, 193.94 and 37.99 is: 56.99
Step by Step Solution
- Step 1: Write the proportion equation
129.29 : 193.94 = 37.99 : x - Step 2: Convert to fraction form
129.29/193.94 = 37.99/x - Step 3: Cross multiply
129.29x = 193.94 × 37.99 - Step 4: Simplify right side
129.29x = 7,367.59 - Step 5: Solve for x
x = 7,367.59/129.29 - Step 6: Final answer
x = 56.99
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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.