Finding the Fourth Proportional to 165.68, 228.61 and 91.99
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Solution
The fourth proportional to 165.68, 228.61 and 91.99 is: 126.92
Step by Step Solution
- Step 1: Write the proportion equation
165.68 : 228.61 = 91.99 : x - Step 2: Convert to fraction form
165.68/228.61 = 91.99/x - Step 3: Cross multiply
165.68x = 228.61 × 91.99 - Step 4: Simplify right side
165.68x = 21,028.43 - Step 5: Solve for x
x = 21,028.43/165.68 - Step 6: Final answer
x = 126.92
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.