Finding the Fourth Proportional to 135.44, 186.62 and 91.70
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Solution
The fourth proportional to 135.44, 186.62 and 91.70 is: 126.35
Step by Step Solution
- Step 1: Write the proportion equation
135.44 : 186.62 = 91.70 : x - Step 2: Convert to fraction form
135.44/186.62 = 91.70/x - Step 3: Cross multiply
135.44x = 186.62 × 91.70 - Step 4: Simplify right side
135.44x = 17,112.36 - Step 5: Solve for x
x = 17,112.36/135.44 - Step 6: Final answer
x = 126.35
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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.