Finding the Fourth Proportional to 812.97, 1,122.39 and 547.79
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Solution
The fourth proportional to 812.97, 1,122.39 and 547.79 is: 756.27
Step by Step Solution
- Step 1: Write the proportion equation
812.97 : 1,122.39 = 547.79 : x - Step 2: Convert to fraction form
812.97/1,122.39 = 547.79/x - Step 3: Cross multiply
812.97x = 1,122.39 × 547.79 - Step 4: Simplify right side
812.97x = 614,828.41 - Step 5: Solve for x
x = 614,828.41/812.97 - Step 6: Final answer
x = 756.27
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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.