Finding the Fourth Proportional to 812.08, 1,122.02 and 718.93
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Solution
The fourth proportional to 812.08, 1,122.02 and 718.93 is: 993.32
Step by Step Solution
- Step 1: Write the proportion equation
812.08 : 1,122.02 = 718.93 : x - Step 2: Convert to fraction form
812.08/1,122.02 = 718.93/x - Step 3: Cross multiply
812.08x = 1,122.02 × 718.93 - Step 4: Simplify right side
812.08x = 806,653.84 - Step 5: Solve for x
x = 806,653.84/812.08 - Step 6: Final answer
x = 993.32
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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.