Finding the Fourth Proportional to 1,133.19, 1,563.68 and 636
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Solution
The fourth proportional to 1,133.19, 1,563.68 and 636 is: 877.61
Step by Step Solution
- Step 1: Write the proportion equation
1,133.19 : 1,563.68 = 636 : x - Step 2: Convert to fraction form
1,133.19/1,563.68 = 636/x - Step 3: Cross multiply
1,133.19x = 1,563.68 × 636 - Step 4: Simplify right side
1,133.19x = 994,497.30 - Step 5: Solve for x
x = 994,497.30/1,133.19 - Step 6: Final answer
x = 877.61
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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.