Finding the Fourth Proportional to 311.58, 466.91 and 149.07
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Solution
The fourth proportional to 311.58, 466.91 and 149.07 is: 223.39
Step by Step Solution
- Step 1: Write the proportion equation
311.58 : 466.91 = 149.07 : x - Step 2: Convert to fraction form
311.58/466.91 = 149.07/x - Step 3: Cross multiply
311.58x = 466.91 × 149.07 - Step 4: Simplify right side
311.58x = 69,604.68 - Step 5: Solve for x
x = 69,604.68/311.58 - Step 6: Final answer
x = 223.39
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.