Finding the Fourth Proportional to 100.86, 151.02 and 54.99
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Solution
The fourth proportional to 100.86, 151.02 and 54.99 is: 82.34
Step by Step Solution
- Step 1: Write the proportion equation
100.86 : 151.02 = 54.99 : x - Step 2: Convert to fraction form
100.86/151.02 = 54.99/x - Step 3: Cross multiply
100.86x = 151.02 × 54.99 - Step 4: Simplify right side
100.86x = 8,304.59 - Step 5: Solve for x
x = 8,304.59/100.86 - Step 6: Final answer
x = 82.34
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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.