Finding the Fourth Proportional to 122.66, 183.95 and 79.30
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Solution
The fourth proportional to 122.66, 183.95 and 79.30 is: 118.92
Step by Step Solution
- Step 1: Write the proportion equation
122.66 : 183.95 = 79.30 : x - Step 2: Convert to fraction form
122.66/183.95 = 79.30/x - Step 3: Cross multiply
122.66x = 183.95 × 79.30 - Step 4: Simplify right side
122.66x = 14,587.24 - Step 5: Solve for x
x = 14,587.24/122.66 - Step 6: Final answer
x = 118.92
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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.