Finding the Fourth Proportional to 135.27, 186.64 and 79.99
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Solution
The fourth proportional to 135.27, 186.64 and 79.99 is: 110.37
Step by Step Solution
- Step 1: Write the proportion equation
135.27 : 186.64 = 79.99 : x - Step 2: Convert to fraction form
135.27/186.64 = 79.99/x - Step 3: Cross multiply
135.27x = 186.64 × 79.99 - Step 4: Simplify right side
135.27x = 14,929.72 - Step 5: Solve for x
x = 14,929.72/135.27 - Step 6: Final answer
x = 110.37
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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.