Finding the Fourth Proportional to 100.00, 137.98 and 57.97
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Solution
The fourth proportional to 100.00, 137.98 and 57.97 is: 79.99
Step by Step Solution
- Step 1: Write the proportion equation
100.00 : 137.98 = 57.97 : x - Step 2: Convert to fraction form
100.00/137.98 = 57.97/x - Step 3: Cross multiply
100.00x = 137.98 × 57.97 - Step 4: Simplify right side
100.00x = 7,999.17 - Step 5: Solve for x
x = 7,999.17/100.00 - Step 6: Final answer
x = 79.99
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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.