Finding the Fourth Proportional to 88.58, 122.26 and 55.80
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Solution
The fourth proportional to 88.58, 122.26 and 55.80 is: 77.02
Step by Step Solution
- Step 1: Write the proportion equation
88.58 : 122.26 = 55.80 : x - Step 2: Convert to fraction form
88.58/122.26 = 55.80/x - Step 3: Cross multiply
88.58x = 122.26 × 55.80 - Step 4: Simplify right side
88.58x = 6,822.11 - Step 5: Solve for x
x = 6,822.11/88.58 - Step 6: Final answer
x = 77.02
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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.