Finding the Fourth Proportional to 396.79, 547.49 and 230.99
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Solution
The fourth proportional to 396.79, 547.49 and 230.99 is: 318.72
Step by Step Solution
- Step 1: Write the proportion equation
396.79 : 547.49 = 230.99 : x - Step 2: Convert to fraction form
396.79/547.49 = 230.99/x - Step 3: Cross multiply
396.79x = 547.49 × 230.99 - Step 4: Simplify right side
396.79x = 126,462.56 - Step 5: Solve for x
x = 126,462.56/396.79 - Step 6: Final answer
x = 318.72
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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.