Finding the Fourth Proportional to 353.80, 490.99 and 346.60
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Solution
The fourth proportional to 353.80, 490.99 and 346.60 is: 481.00
Step by Step Solution
- Step 1: Write the proportion equation
353.80 : 490.99 = 346.60 : x - Step 2: Convert to fraction form
353.80/490.99 = 346.60/x - Step 3: Cross multiply
353.80x = 490.99 × 346.60 - Step 4: Simplify right side
353.80x = 170,177.13 - Step 5: Solve for x
x = 170,177.13/353.80 - Step 6: Final answer
x = 481.00
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Why These Related Problems?
These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.