Finding the Fourth Proportional to 821.26, 1,133.21 and 471.88
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Solution
The fourth proportional to 821.26, 1,133.21 and 471.88 is: 651.12
Step by Step Solution
- Step 1: Write the proportion equation
821.26 : 1,133.21 = 471.88 : x - Step 2: Convert to fraction form
821.26/1,133.21 = 471.88/x - Step 3: Cross multiply
821.26x = 1,133.21 × 471.88 - Step 4: Simplify right side
821.26x = 534,739.13 - Step 5: Solve for x
x = 534,739.13/821.26 - Step 6: Final answer
x = 651.12
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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.