Finding the Fourth Proportional to 696.92, 1,045.62 and 331.68
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Solution
The fourth proportional to 696.92, 1,045.62 and 331.68 is: 497.63
Step by Step Solution
- Step 1: Write the proportion equation
696.92 : 1,045.62 = 331.68 : x - Step 2: Convert to fraction form
696.92/1,045.62 = 331.68/x - Step 3: Cross multiply
696.92x = 1,045.62 × 331.68 - Step 4: Simplify right side
696.92x = 346,811.24 - Step 5: Solve for x
x = 346,811.24/696.92 - Step 6: Final answer
x = 497.63
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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.