Finding the Fourth Proportional to 88.80, 122.55 and 49.99
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Solution
The fourth proportional to 88.80, 122.55 and 49.99 is: 68.99
Step by Step Solution
- Step 1: Write the proportion equation
88.80 : 122.55 = 49.99 : x - Step 2: Convert to fraction form
88.80/122.55 = 49.99/x - Step 3: Cross multiply
88.80x = 122.55 × 49.99 - Step 4: Simplify right side
88.80x = 6,126.57 - Step 5: Solve for x
x = 6,126.57/88.80 - Step 6: Final answer
x = 68.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.