Finding the Fourth Proportional to 311.24, 466.80 and 149
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Solution
The fourth proportional to 311.24, 466.80 and 149 is: 223.47
Step by Step Solution
- Step 1: Write the proportion equation
311.24 : 466.80 = 149 : x - Step 2: Convert to fraction form
311.24/466.80 = 149/x - Step 3: Cross multiply
311.24x = 466.80 × 149 - Step 4: Simplify right side
311.24x = 69,553.20 - Step 5: Solve for x
x = 69,553.20/311.24 - Step 6: Final answer
x = 223.47
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.