Finding the Fourth Proportional to 99.32, 148.95 and 83.99
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Solution
The fourth proportional to 99.32, 148.95 and 83.99 is: 125.95
Step by Step Solution
- Step 1: Write the proportion equation
99.32 : 148.95 = 83.99 : x - Step 2: Convert to fraction form
99.32/148.95 = 83.99/x - Step 3: Cross multiply
99.32x = 148.95 × 83.99 - Step 4: Simplify right side
99.32x = 12,509.15 - Step 5: Solve for x
x = 12,509.15/99.32 - Step 6: Final answer
x = 125.95
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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.