Finding the Fourth Proportional to 393.14, 542.30 and 252.99
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Solution
The fourth proportional to 393.14, 542.30 and 252.99 is: 348.98
Step by Step Solution
- Step 1: Write the proportion equation
393.14 : 542.30 = 252.99 : x - Step 2: Convert to fraction form
393.14/542.30 = 252.99/x - Step 3: Cross multiply
393.14x = 542.30 × 252.99 - Step 4: Simplify right side
393.14x = 137,195.21 - Step 5: Solve for x
x = 137,195.21/393.14 - Step 6: Final answer
x = 348.98
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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.