Finding the Fourth Proportional to 129.94, 194.93 and 38.63
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Solution
The fourth proportional to 129.94, 194.93 and 38.63 is: 57.96
Step by Step Solution
- Step 1: Write the proportion equation
129.94 : 194.93 = 38.63 : x - Step 2: Convert to fraction form
129.94/194.93 = 38.63/x - Step 3: Cross multiply
129.94x = 194.93 × 38.63 - Step 4: Simplify right side
129.94x = 7,530.54 - Step 5: Solve for x
x = 7,530.54/129.94 - Step 6: Final answer
x = 57.96
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.