Finding the Fourth Proportional to 1,086.61, 1,629.38 and 355.99
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Solution
The fourth proportional to 1,086.61, 1,629.38 and 355.99 is: 533.80
Step by Step Solution
- Step 1: Write the proportion equation
1,086.61 : 1,629.38 = 355.99 : x - Step 2: Convert to fraction form
1,086.61/1,629.38 = 355.99/x - Step 3: Cross multiply
1,086.61x = 1,629.38 × 355.99 - Step 4: Simplify right side
1,086.61x = 580,033.06 - Step 5: Solve for x
x = 580,033.06/1,086.61 - Step 6: Final answer
x = 533.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.