Finding the Fourth Proportional to 418.11, 576.99 and 243.55
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Solution
The fourth proportional to 418.11, 576.99 and 243.55 is: 336.10
Step by Step Solution
- Step 1: Write the proportion equation
418.11 : 576.99 = 243.55 : x - Step 2: Convert to fraction form
418.11/576.99 = 243.55/x - Step 3: Cross multiply
418.11x = 576.99 × 243.55 - Step 4: Simplify right side
418.11x = 140,525.91 - Step 5: Solve for x
x = 140,525.91/418.11 - Step 6: Final answer
x = 336.10
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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.