Finding the Fourth Proportional to 393.24, 542.68 and 235.97
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Solution
The fourth proportional to 393.24, 542.68 and 235.97 is: 325.64
Step by Step Solution
- Step 1: Write the proportion equation
393.24 : 542.68 = 235.97 : x - Step 2: Convert to fraction form
393.24/542.68 = 235.97/x - Step 3: Cross multiply
393.24x = 542.68 × 235.97 - Step 4: Simplify right side
393.24x = 128,053.49 - Step 5: Solve for x
x = 128,053.49/393.24 - Step 6: Final answer
x = 325.64
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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.