Finding the Fourth Proportional to 355.38, 490.26 and 207.99
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Solution
The fourth proportional to 355.38, 490.26 and 207.99 is: 286.93
Step by Step Solution
- Step 1: Write the proportion equation
355.38 : 490.26 = 207.99 : x - Step 2: Convert to fraction form
355.38/490.26 = 207.99/x - Step 3: Cross multiply
355.38x = 490.26 × 207.99 - Step 4: Simplify right side
355.38x = 101,969.18 - Step 5: Solve for x
x = 101,969.18/355.38 - Step 6: Final answer
x = 286.93
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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.