Finding the Fourth Proportional to 272.80, 409.12 and 170.08
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Solution
The fourth proportional to 272.80, 409.12 and 170.08 is: 255.07
Step by Step Solution
- Step 1: Write the proportion equation
272.80 : 409.12 = 170.08 : x - Step 2: Convert to fraction form
272.80/409.12 = 170.08/x - Step 3: Cross multiply
272.80x = 409.12 × 170.08 - Step 4: Simplify right side
272.80x = 69,583.13 - Step 5: Solve for x
x = 69,583.13/272.80 - Step 6: Final answer
x = 255.07
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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.