Finding the Fourth Proportional to 129.57, 194.21 and 60.99
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Solution
The fourth proportional to 129.57, 194.21 and 60.99 is: 91.42
Step by Step Solution
- Step 1: Write the proportion equation
129.57 : 194.21 = 60.99 : x - Step 2: Convert to fraction form
129.57/194.21 = 60.99/x - Step 3: Cross multiply
129.57x = 194.21 × 60.99 - Step 4: Simplify right side
129.57x = 11,844.87 - Step 5: Solve for x
x = 11,844.87/129.57 - Step 6: Final answer
x = 91.42
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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.