Finding the Fourth Proportional to 177.28, 266.08 and 81.12
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Solution
The fourth proportional to 177.28, 266.08 and 81.12 is: 121.75
Step by Step Solution
- Step 1: Write the proportion equation
177.28 : 266.08 = 81.12 : x - Step 2: Convert to fraction form
177.28/266.08 = 81.12/x - Step 3: Cross multiply
177.28x = 266.08 × 81.12 - Step 4: Simplify right side
177.28x = 21,584.41 - Step 5: Solve for x
x = 21,584.41/177.28 - Step 6: Final answer
x = 121.75
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.