Finding the Fourth Proportional to 385.18, 576.99 and 230.65
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Solution
The fourth proportional to 385.18, 576.99 and 230.65 is: 345.51
Step by Step Solution
- Step 1: Write the proportion equation
385.18 : 576.99 = 230.65 : x - Step 2: Convert to fraction form
385.18/576.99 = 230.65/x - Step 3: Cross multiply
385.18x = 576.99 × 230.65 - Step 4: Simplify right side
385.18x = 133,082.74 - Step 5: Solve for x
x = 133,082.74/385.18 - Step 6: Final answer
x = 345.51
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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.