Finding the Fourth Proportional to 418.19, 576.99 and 243.43
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Solution
The fourth proportional to 418.19, 576.99 and 243.43 is: 335.87
Step by Step Solution
- Step 1: Write the proportion equation
418.19 : 576.99 = 243.43 : x - Step 2: Convert to fraction form
418.19/576.99 = 243.43/x - Step 3: Cross multiply
418.19x = 576.99 × 243.43 - Step 4: Simplify right side
418.19x = 140,455.23 - Step 5: Solve for x
x = 140,455.23/418.19 - Step 6: Final answer
x = 335.87
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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.