Finding the Fourth Proportional to 833.36, 1,249.68 and 320
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Solution
The fourth proportional to 833.36, 1,249.68 and 320 is: 479.86
Step by Step Solution
- Step 1: Write the proportion equation
833.36 : 1,249.68 = 320 : x - Step 2: Convert to fraction form
833.36/1,249.68 = 320/x - Step 3: Cross multiply
833.36x = 1,249.68 × 320 - Step 4: Simplify right side
833.36x = 399,897.60 - Step 5: Solve for x
x = 399,897.60/833.36 - Step 6: Final answer
x = 479.86
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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.