Finding the Fourth Proportional to 668.67, 922.79 and 373.99
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Solution
The fourth proportional to 668.67, 922.79 and 373.99 is: 516.11
Step by Step Solution
- Step 1: Write the proportion equation
668.67 : 922.79 = 373.99 : x - Step 2: Convert to fraction form
668.67/922.79 = 373.99/x - Step 3: Cross multiply
668.67x = 922.79 × 373.99 - Step 4: Simplify right side
668.67x = 345,110.06 - Step 5: Solve for x
x = 345,110.06/668.67 - Step 6: Final answer
x = 516.11
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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.