Finding the Fourth Proportional to 378.65, 570.02 and 344.63
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Solution
The fourth proportional to 378.65, 570.02 and 344.63 is: 518.81
Step by Step Solution
- Step 1: Write the proportion equation
378.65 : 570.02 = 344.63 : x - Step 2: Convert to fraction form
378.65/570.02 = 344.63/x - Step 3: Cross multiply
378.65x = 570.02 × 344.63 - Step 4: Simplify right side
378.65x = 196,445.99 - Step 5: Solve for x
x = 196,445.99/378.65 - Step 6: Final answer
x = 518.81
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.