Finding the Fourth Proportional to 272.68, 408.44 and 207.76
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Solution
The fourth proportional to 272.68, 408.44 and 207.76 is: 311.20
Step by Step Solution
- Step 1: Write the proportion equation
272.68 : 408.44 = 207.76 : x - Step 2: Convert to fraction form
272.68/408.44 = 207.76/x - Step 3: Cross multiply
272.68x = 408.44 × 207.76 - Step 4: Simplify right side
272.68x = 84,857.49 - Step 5: Solve for x
x = 84,857.49/272.68 - Step 6: Final answer
x = 311.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.