Finding the Fourth Proportional to 378.41, 522.11 and 230.99
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Solution
The fourth proportional to 378.41, 522.11 and 230.99 is: 318.70
Step by Step Solution
- Step 1: Write the proportion equation
378.41 : 522.11 = 230.99 : x - Step 2: Convert to fraction form
378.41/522.11 = 230.99/x - Step 3: Cross multiply
378.41x = 522.11 × 230.99 - Step 4: Simplify right side
378.41x = 120,598.42 - Step 5: Solve for x
x = 120,598.42/378.41 - Step 6: Final answer
x = 318.70
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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.