Finding the Fourth Proportional to 133.36, 183.92 and 91.84
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Solution
The fourth proportional to 133.36, 183.92 and 91.84 is: 126.66
Step by Step Solution
- Step 1: Write the proportion equation
133.36 : 183.92 = 91.84 : x - Step 2: Convert to fraction form
133.36/183.92 = 91.84/x - Step 3: Cross multiply
133.36x = 183.92 × 91.84 - Step 4: Simplify right side
133.36x = 16,891.21 - Step 5: Solve for x
x = 16,891.21/133.36 - Step 6: Final answer
x = 126.66
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.