Finding the Fourth Proportional to 201.40, 278.36 and 177.88
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Solution
The fourth proportional to 201.40, 278.36 and 177.88 is: 245.85
Step by Step Solution
- Step 1: Write the proportion equation
201.40 : 278.36 = 177.88 : x - Step 2: Convert to fraction form
201.40/278.36 = 177.88/x - Step 3: Cross multiply
201.40x = 278.36 × 177.88 - Step 4: Simplify right side
201.40x = 49,514.68 - Step 5: Solve for x
x = 49,514.68/201.40 - Step 6: Final answer
x = 245.85
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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.