Finding the Fourth Proportional to 132.09, 198.91 and 115.17
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Solution
The fourth proportional to 132.09, 198.91 and 115.17 is: 173.43
Step by Step Solution
- Step 1: Write the proportion equation
132.09 : 198.91 = 115.17 : x - Step 2: Convert to fraction form
132.09/198.91 = 115.17/x - Step 3: Cross multiply
132.09x = 198.91 × 115.17 - Step 4: Simplify right side
132.09x = 22,907.21 - Step 5: Solve for x
x = 22,907.21/132.09 - Step 6: Final answer
x = 173.43
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These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.