Finding the Fourth Proportional to 396.99, 547.68 and 231.12
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Solution
The fourth proportional to 396.99, 547.68 and 231.12 is: 318.85
Step by Step Solution
- Step 1: Write the proportion equation
396.99 : 547.68 = 231.12 : x - Step 2: Convert to fraction form
396.99/547.68 = 231.12/x - Step 3: Cross multiply
396.99x = 547.68 × 231.12 - Step 4: Simplify right side
396.99x = 126,579.80 - Step 5: Solve for x
x = 126,579.80/396.99 - Step 6: Final answer
x = 318.85
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.