Finding the Fourth Proportional to 305.62, 421.79 and 174.63
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Solution
The fourth proportional to 305.62, 421.79 and 174.63 is: 241.01
Step by Step Solution
- Step 1: Write the proportion equation
305.62 : 421.79 = 174.63 : x - Step 2: Convert to fraction form
305.62/421.79 = 174.63/x - Step 3: Cross multiply
305.62x = 421.79 × 174.63 - Step 4: Simplify right side
305.62x = 73,657.19 - Step 5: Solve for x
x = 73,657.19/305.62 - Step 6: Final answer
x = 241.01
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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.