Finding the Fourth Proportional to 272.20, 375.79 and 177.79
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Solution
The fourth proportional to 272.20, 375.79 and 177.79 is: 245.45
Step by Step Solution
- Step 1: Write the proportion equation
272.20 : 375.79 = 177.79 : x - Step 2: Convert to fraction form
272.20/375.79 = 177.79/x - Step 3: Cross multiply
272.20x = 375.79 × 177.79 - Step 4: Simplify right side
272.20x = 66,811.70 - Step 5: Solve for x
x = 66,811.70/272.20 - Step 6: Final answer
x = 245.45
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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.