Finding the Fourth Proportional to 921.26, 1,381.74 and 344
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Solution
The fourth proportional to 921.26, 1,381.74 and 344 is: 515.94
Step by Step Solution
- Step 1: Write the proportion equation
921.26 : 1,381.74 = 344 : x - Step 2: Convert to fraction form
921.26/1,381.74 = 344/x - Step 3: Cross multiply
921.26x = 1,381.74 × 344 - Step 4: Simplify right side
921.26x = 475,318.56 - Step 5: Solve for x
x = 475,318.56/921.26 - Step 6: Final answer
x = 515.94
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.