Finding the Fourth Proportional to 290.81, 400.53 and 216.99
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Solution
The fourth proportional to 290.81, 400.53 and 216.99 is: 298.86
Step by Step Solution
- Step 1: Write the proportion equation
290.81 : 400.53 = 216.99 : x - Step 2: Convert to fraction form
290.81/400.53 = 216.99/x - Step 3: Cross multiply
290.81x = 400.53 × 216.99 - Step 4: Simplify right side
290.81x = 86,911.00 - Step 5: Solve for x
x = 86,911.00/290.81 - Step 6: Final answer
x = 298.86
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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.