Finding the Fourth Proportional to 279.26, 418.75 and 163.74
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Solution
The fourth proportional to 279.26, 418.75 and 163.74 is: 245.53
Step by Step Solution
- Step 1: Write the proportion equation
279.26 : 418.75 = 163.74 : x - Step 2: Convert to fraction form
279.26/418.75 = 163.74/x - Step 3: Cross multiply
279.26x = 418.75 × 163.74 - Step 4: Simplify right side
279.26x = 68,566.13 - Step 5: Solve for x
x = 68,566.13/279.26 - Step 6: Final answer
x = 245.53
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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.