Finding the Fourth Proportional to 351.97, 485.74 and 212.08
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Solution
The fourth proportional to 351.97, 485.74 and 212.08 is: 292.68
Step by Step Solution
- Step 1: Write the proportion equation
351.97 : 485.74 = 212.08 : x - Step 2: Convert to fraction form
351.97/485.74 = 212.08/x - Step 3: Cross multiply
351.97x = 485.74 × 212.08 - Step 4: Simplify right side
351.97x = 103,013.99 - Step 5: Solve for x
x = 103,013.99/351.97 - Step 6: Final answer
x = 292.68
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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.