Finding the Fourth Proportional to 305.42, 421.44 and 174.44
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Solution
The fourth proportional to 305.42, 421.44 and 174.44 is: 240.70
Step by Step Solution
- Step 1: Write the proportion equation
305.42 : 421.44 = 174.44 : x - Step 2: Convert to fraction form
305.42/421.44 = 174.44/x - Step 3: Cross multiply
305.42x = 421.44 × 174.44 - Step 4: Simplify right side
305.42x = 73,515.99 - Step 5: Solve for x
x = 73,515.99/305.42 - Step 6: Final answer
x = 240.70
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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.