Finding the Fourth Proportional to 375.79, 518.60 and 209.99
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Solution
The fourth proportional to 375.79, 518.60 and 209.99 is: 289.80
Step by Step Solution
- Step 1: Write the proportion equation
375.79 : 518.60 = 209.99 : x - Step 2: Convert to fraction form
375.79/518.60 = 209.99/x - Step 3: Cross multiply
375.79x = 518.60 × 209.99 - Step 4: Simplify right side
375.79x = 108,902.64 - Step 5: Solve for x
x = 108,902.64/375.79 - Step 6: Final answer
x = 289.80
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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.