Finding the Fourth Proportional to 392.70, 541.75 and 252.79
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Solution
The fourth proportional to 392.70, 541.75 and 252.79 is: 348.74
Step by Step Solution
- Step 1: Write the proportion equation
392.70 : 541.75 = 252.79 : x - Step 2: Convert to fraction form
392.70/541.75 = 252.79/x - Step 3: Cross multiply
392.70x = 541.75 × 252.79 - Step 4: Simplify right side
392.70x = 136,948.98 - Step 5: Solve for x
x = 136,948.98/392.70 - Step 6: Final answer
x = 348.74
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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.