Finding the Fourth Proportional to 100.24, 149.64 and 88.09
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Solution
The fourth proportional to 100.24, 149.64 and 88.09 is: 131.50
Step by Step Solution
- Step 1: Write the proportion equation
100.24 : 149.64 = 88.09 : x - Step 2: Convert to fraction form
100.24/149.64 = 88.09/x - Step 3: Cross multiply
100.24x = 149.64 × 88.09 - Step 4: Simplify right side
100.24x = 13,181.79 - Step 5: Solve for x
x = 13,181.79/100.24 - Step 6: Final answer
x = 131.50
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.