Finding the Fourth Proportional to 135.36, 186.74 and 80.08
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Solution
The fourth proportional to 135.36, 186.74 and 80.08 is: 110.47
Step by Step Solution
- Step 1: Write the proportion equation
135.36 : 186.74 = 80.08 : x - Step 2: Convert to fraction form
135.36/186.74 = 80.08/x - Step 3: Cross multiply
135.36x = 186.74 × 80.08 - Step 4: Simplify right side
135.36x = 14,953.74 - Step 5: Solve for x
x = 14,953.74/135.36 - Step 6: Final answer
x = 110.47
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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.