Finding the Fourth Proportional to 305.62, 421.74 and 174.62
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Solution
The fourth proportional to 305.62, 421.74 and 174.62 is: 240.97
Step by Step Solution
- Step 1: Write the proportion equation
305.62 : 421.74 = 174.62 : x - Step 2: Convert to fraction form
305.62/421.74 = 174.62/x - Step 3: Cross multiply
305.62x = 421.74 × 174.62 - Step 4: Simplify right side
305.62x = 73,644.24 - Step 5: Solve for x
x = 73,644.24/305.62 - Step 6: Final answer
x = 240.97
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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.