Finding the Fourth Proportional to 392.18, 541.08 and 261.23
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Solution
The fourth proportional to 392.18, 541.08 and 261.23 is: 360.41
Step by Step Solution
- Step 1: Write the proportion equation
392.18 : 541.08 = 261.23 : x - Step 2: Convert to fraction form
392.18/541.08 = 261.23/x - Step 3: Cross multiply
392.18x = 541.08 × 261.23 - Step 4: Simplify right side
392.18x = 141,343.62 - Step 5: Solve for x
x = 141,343.62/392.18 - Step 6: Final answer
x = 360.41
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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.