Finding the Fourth Proportional to 132.36, 198.64 and 80.84
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Solution
The fourth proportional to 132.36, 198.64 and 80.84 is: 121.32
Step by Step Solution
- Step 1: Write the proportion equation
132.36 : 198.64 = 80.84 : x - Step 2: Convert to fraction form
132.36/198.64 = 80.84/x - Step 3: Cross multiply
132.36x = 198.64 × 80.84 - Step 4: Simplify right side
132.36x = 16,058.06 - Step 5: Solve for x
x = 16,058.06/132.36 - Step 6: Final answer
x = 121.32
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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.