Finding the Fourth Proportional to 135.62, 186.94 and 91.88
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Solution
The fourth proportional to 135.62, 186.94 and 91.88 is: 126.65
Step by Step Solution
- Step 1: Write the proportion equation
135.62 : 186.94 = 91.88 : x - Step 2: Convert to fraction form
135.62/186.94 = 91.88/x - Step 3: Cross multiply
135.62x = 186.94 × 91.88 - Step 4: Simplify right side
135.62x = 17,176.05 - Step 5: Solve for x
x = 17,176.05/135.62 - Step 6: Final answer
x = 126.65
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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.