Finding the Fourth Proportional to 135.23, 186.62 and 79.94
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Solution
The fourth proportional to 135.23, 186.62 and 79.94 is: 110.31
Step by Step Solution
- Step 1: Write the proportion equation
135.23 : 186.62 = 79.94 : x - Step 2: Convert to fraction form
135.23/186.62 = 79.94/x - Step 3: Cross multiply
135.23x = 186.62 × 79.94 - Step 4: Simplify right side
135.23x = 14,917.07 - Step 5: Solve for x
x = 14,917.07/135.23 - Step 6: Final answer
x = 110.31
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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.