Finding the Fourth Proportional to 991.37, 1,367.94 and 566
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Solution
The fourth proportional to 991.37, 1,367.94 and 566 is: 780.99
Step by Step Solution
- Step 1: Write the proportion equation
991.37 : 1,367.94 = 566 : x - Step 2: Convert to fraction form
991.37/1,367.94 = 566/x - Step 3: Cross multiply
991.37x = 1,367.94 × 566 - Step 4: Simplify right side
991.37x = 774,254.04 - Step 5: Solve for x
x = 774,254.04/991.37 - Step 6: Final answer
x = 780.99
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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.