Finding the Fourth Proportional to 345.93, 518.99 and 287.84
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Solution
The fourth proportional to 345.93, 518.99 and 287.84 is: 431.83
Step by Step Solution
- Step 1: Write the proportion equation
345.93 : 518.99 = 287.84 : x - Step 2: Convert to fraction form
345.93/518.99 = 287.84/x - Step 3: Cross multiply
345.93x = 518.99 × 287.84 - Step 4: Simplify right side
345.93x = 149,382.05 - Step 5: Solve for x
x = 149,382.05/345.93 - Step 6: Final answer
x = 431.83
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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.