Finding the Fourth Proportional to 355.41, 490.55 and 207.99
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Solution
The fourth proportional to 355.41, 490.55 and 207.99 is: 287.07
Step by Step Solution
- Step 1: Write the proportion equation
355.41 : 490.55 = 207.99 : x - Step 2: Convert to fraction form
355.41/490.55 = 207.99/x - Step 3: Cross multiply
355.41x = 490.55 × 207.99 - Step 4: Simplify right side
355.41x = 102,028.45 - Step 5: Solve for x
x = 102,028.45/355.41 - Step 6: Final answer
x = 287.07
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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.