Finding the Fourth Proportional to 378.09, 565.07 and 274.68
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Solution
The fourth proportional to 378.09, 565.07 and 274.68 is: 410.52
Step by Step Solution
- Step 1: Write the proportion equation
378.09 : 565.07 = 274.68 : x - Step 2: Convert to fraction form
378.09/565.07 = 274.68/x - Step 3: Cross multiply
378.09x = 565.07 × 274.68 - Step 4: Simplify right side
378.09x = 155,212.05 - Step 5: Solve for x
x = 155,212.05/378.09 - Step 6: Final answer
x = 410.52
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.