Finding the Fourth Proportional to 100.99, 151.35 and 82.63
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Solution
The fourth proportional to 100.99, 151.35 and 82.63 is: 123.83
Step by Step Solution
- Step 1: Write the proportion equation
100.99 : 151.35 = 82.63 : x - Step 2: Convert to fraction form
100.99/151.35 = 82.63/x - Step 3: Cross multiply
100.99x = 151.35 × 82.63 - Step 4: Simplify right side
100.99x = 12,506.05 - Step 5: Solve for x
x = 12,506.05/100.99 - Step 6: Final answer
x = 123.83
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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.