Finding the Fourth Proportional to 378.84, 522.62 and 239.08
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Solution
The fourth proportional to 378.84, 522.62 and 239.08 is: 329.82
Step by Step Solution
- Step 1: Write the proportion equation
378.84 : 522.62 = 239.08 : x - Step 2: Convert to fraction form
378.84/522.62 = 239.08/x - Step 3: Cross multiply
378.84x = 522.62 × 239.08 - Step 4: Simplify right side
378.84x = 124,947.99 - Step 5: Solve for x
x = 124,947.99/378.84 - Step 6: Final answer
x = 329.82
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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.