Finding the Fourth Proportional to 305.23, 421.18 and 174.21
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Solution
The fourth proportional to 305.23, 421.18 and 174.21 is: 240.39
Step by Step Solution
- Step 1: Write the proportion equation
305.23 : 421.18 = 174.21 : x - Step 2: Convert to fraction form
305.23/421.18 = 174.21/x - Step 3: Cross multiply
305.23x = 421.18 × 174.21 - Step 4: Simplify right side
305.23x = 73,375.10 - Step 5: Solve for x
x = 73,375.10/305.23 - Step 6: Final answer
x = 240.39
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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.