Finding the Fourth Proportional to 135.46, 186.91 and 80.19
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Solution
The fourth proportional to 135.46, 186.91 and 80.19 is: 110.65
Step by Step Solution
- Step 1: Write the proportion equation
135.46 : 186.91 = 80.19 : x - Step 2: Convert to fraction form
135.46/186.91 = 80.19/x - Step 3: Cross multiply
135.46x = 186.91 × 80.19 - Step 4: Simplify right side
135.46x = 14,988.31 - Step 5: Solve for x
x = 14,988.31/135.46 - Step 6: Final answer
x = 110.65
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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.