Finding the Fourth Proportional to 791.99, 1,187.99 and 519.81
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Solution
The fourth proportional to 791.99, 1,187.99 and 519.81 is: 779.72
Step by Step Solution
- Step 1: Write the proportion equation
791.99 : 1,187.99 = 519.81 : x - Step 2: Convert to fraction form
791.99/1,187.99 = 519.81/x - Step 3: Cross multiply
791.99x = 1,187.99 × 519.81 - Step 4: Simplify right side
791.99x = 617,529.08 - Step 5: Solve for x
x = 617,529.08/791.99 - Step 6: Final answer
x = 779.72
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.