Finding the Fourth Proportional to 248.74, 372.82 and 138.99
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Solution
The fourth proportional to 248.74, 372.82 and 138.99 is: 208.32
Step by Step Solution
- Step 1: Write the proportion equation
248.74 : 372.82 = 138.99 : x - Step 2: Convert to fraction form
248.74/372.82 = 138.99/x - Step 3: Cross multiply
248.74x = 372.82 × 138.99 - Step 4: Simplify right side
248.74x = 51,817.93 - Step 5: Solve for x
x = 51,817.93/248.74 - Step 6: Final answer
x = 208.32
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.