Finding the Fourth Proportional to 135.44, 186.94 and 77.26
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Solution
The fourth proportional to 135.44, 186.94 and 77.26 is: 106.64
Step by Step Solution
- Step 1: Write the proportion equation
135.44 : 186.94 = 77.26 : x - Step 2: Convert to fraction form
135.44/186.94 = 77.26/x - Step 3: Cross multiply
135.44x = 186.94 × 77.26 - Step 4: Simplify right side
135.44x = 14,442.24 - Step 5: Solve for x
x = 14,442.24/135.44 - Step 6: Final answer
x = 106.64
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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.