Finding the Fourth Proportional to 125.19, 187.77 and 52.99
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Solution
The fourth proportional to 125.19, 187.77 and 52.99 is: 79.48
Step by Step Solution
- Step 1: Write the proportion equation
125.19 : 187.77 = 52.99 : x - Step 2: Convert to fraction form
125.19/187.77 = 52.99/x - Step 3: Cross multiply
125.19x = 187.77 × 52.99 - Step 4: Simplify right side
125.19x = 9,949.93 - Step 5: Solve for x
x = 9,949.93/125.19 - Step 6: Final answer
x = 79.48
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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.