Finding the Fourth Proportional to 100.31, 150.24 and 65.99
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Solution
The fourth proportional to 100.31, 150.24 and 65.99 is: 98.84
Step by Step Solution
- Step 1: Write the proportion equation
100.31 : 150.24 = 65.99 : x - Step 2: Convert to fraction form
100.31/150.24 = 65.99/x - Step 3: Cross multiply
100.31x = 150.24 × 65.99 - Step 4: Simplify right side
100.31x = 9,914.34 - Step 5: Solve for x
x = 9,914.34/100.31 - Step 6: Final answer
x = 98.84
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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.