Finding the Fourth Proportional to 286.79, 430.10 and 122.26
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Solution
The fourth proportional to 286.79, 430.10 and 122.26 is: 183.35
Step by Step Solution
- Step 1: Write the proportion equation
286.79 : 430.10 = 122.26 : x - Step 2: Convert to fraction form
286.79/430.10 = 122.26/x - Step 3: Cross multiply
286.79x = 430.10 × 122.26 - Step 4: Simplify right side
286.79x = 52,582.95 - Step 5: Solve for x
x = 52,582.95/286.79 - Step 6: Final answer
x = 183.35
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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.