Finding the Fourth Proportional to 351.28, 485.36 and 252.86
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Solution
The fourth proportional to 351.28, 485.36 and 252.86 is: 349.37
Step by Step Solution
- Step 1: Write the proportion equation
351.28 : 485.36 = 252.86 : x - Step 2: Convert to fraction form
351.28/485.36 = 252.86/x - Step 3: Cross multiply
351.28x = 485.36 × 252.86 - Step 4: Simplify right side
351.28x = 122,728.13 - Step 5: Solve for x
x = 122,728.13/351.28 - Step 6: Final answer
x = 349.37
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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.