Finding the Fourth Proportional to 813.07, 1,121.68 and 564.99
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Solution
The fourth proportional to 813.07, 1,121.68 and 564.99 is: 779.44
Step by Step Solution
- Step 1: Write the proportion equation
813.07 : 1,121.68 = 564.99 : x - Step 2: Convert to fraction form
813.07/1,121.68 = 564.99/x - Step 3: Cross multiply
813.07x = 1,121.68 × 564.99 - Step 4: Simplify right side
813.07x = 633,737.98 - Step 5: Solve for x
x = 633,737.98/813.07 - Step 6: Final answer
x = 779.44
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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.