Finding the Fourth Proportional to 678.62, 936.93 and 513.14
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Solution
The fourth proportional to 678.62, 936.93 and 513.14 is: 708.46
Step by Step Solution
- Step 1: Write the proportion equation
678.62 : 936.93 = 513.14 : x - Step 2: Convert to fraction form
678.62/936.93 = 513.14/x - Step 3: Cross multiply
678.62x = 936.93 × 513.14 - Step 4: Simplify right side
678.62x = 480,776.26 - Step 5: Solve for x
x = 480,776.26/678.62 - Step 6: Final answer
x = 708.46
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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.