Finding the Fourth Proportional to 378.41, 522.64 and 254.63
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Solution
The fourth proportional to 378.41, 522.64 and 254.63 is: 351.68
Step by Step Solution
- Step 1: Write the proportion equation
378.41 : 522.64 = 254.63 : x - Step 2: Convert to fraction form
378.41/522.64 = 254.63/x - Step 3: Cross multiply
378.41x = 522.64 × 254.63 - Step 4: Simplify right side
378.41x = 133,077.08 - Step 5: Solve for x
x = 133,077.08/378.41 - Step 6: Final answer
x = 351.68
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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.