Finding the Fourth Proportional to 132.58, 198.62 and 115.26
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Solution
The fourth proportional to 132.58, 198.62 and 115.26 is: 172.67
Step by Step Solution
- Step 1: Write the proportion equation
132.58 : 198.62 = 115.26 : x - Step 2: Convert to fraction form
132.58/198.62 = 115.26/x - Step 3: Cross multiply
132.58x = 198.62 × 115.26 - Step 4: Simplify right side
132.58x = 22,892.94 - Step 5: Solve for x
x = 22,892.94/132.58 - Step 6: Final answer
x = 172.67
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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.