Finding the Fourth Proportional to 286.92, 430.36 and 94.55
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Solution
The fourth proportional to 286.92, 430.36 and 94.55 is: 141.82
Step by Step Solution
- Step 1: Write the proportion equation
286.92 : 430.36 = 94.55 : x - Step 2: Convert to fraction form
286.92/430.36 = 94.55/x - Step 3: Cross multiply
286.92x = 430.36 × 94.55 - Step 4: Simplify right side
286.92x = 40,690.54 - Step 5: Solve for x
x = 40,690.54/286.92 - Step 6: Final answer
x = 141.82
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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.