Finding the Fourth Proportional to 132.40, 198.62 and 41.09
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Solution
The fourth proportional to 132.40, 198.62 and 41.09 is: 61.64
Step by Step Solution
- Step 1: Write the proportion equation
132.40 : 198.62 = 41.09 : x - Step 2: Convert to fraction form
132.40/198.62 = 41.09/x - Step 3: Cross multiply
132.40x = 198.62 × 41.09 - Step 4: Simplify right side
132.40x = 8,161.30 - Step 5: Solve for x
x = 8,161.30/132.40 - Step 6: Final answer
x = 61.64
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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.