Finding the Fourth Proportional to 324.09, 485.73 and 315.99
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Solution
The fourth proportional to 324.09, 485.73 and 315.99 is: 473.59
Step by Step Solution
- Step 1: Write the proportion equation
324.09 : 485.73 = 315.99 : x - Step 2: Convert to fraction form
324.09/485.73 = 315.99/x - Step 3: Cross multiply
324.09x = 485.73 × 315.99 - Step 4: Simplify right side
324.09x = 153,485.82 - Step 5: Solve for x
x = 153,485.82/324.09 - Step 6: Final answer
x = 473.59
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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.