Finding the Fourth Proportional to 99.06, 147.79 and 84.45
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Solution
The fourth proportional to 99.06, 147.79 and 84.45 is: 125.99
Step by Step Solution
- Step 1: Write the proportion equation
99.06 : 147.79 = 84.45 : x - Step 2: Convert to fraction form
99.06/147.79 = 84.45/x - Step 3: Cross multiply
99.06x = 147.79 × 84.45 - Step 4: Simplify right side
99.06x = 12,480.34 - Step 5: Solve for x
x = 12,480.34/99.06 - Step 6: Final answer
x = 125.99
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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.