Finding the Fourth Proportional to 201.22, 277.65 and 112.70
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Solution
The fourth proportional to 201.22, 277.65 and 112.70 is: 155.51
Step by Step Solution
- Step 1: Write the proportion equation
201.22 : 277.65 = 112.70 : x - Step 2: Convert to fraction form
201.22/277.65 = 112.70/x - Step 3: Cross multiply
201.22x = 277.65 × 112.70 - Step 4: Simplify right side
201.22x = 31,291.44 - Step 5: Solve for x
x = 31,291.44/201.22 - Step 6: Final answer
x = 155.51
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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.