Finding the Fourth Proportional to 369.13, 509.11 and 221.74
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Solution
The fourth proportional to 369.13, 509.11 and 221.74 is: 305.83
Step by Step Solution
- Step 1: Write the proportion equation
369.13 : 509.11 = 221.74 : x - Step 2: Convert to fraction form
369.13/509.11 = 221.74/x - Step 3: Cross multiply
369.13x = 509.11 × 221.74 - Step 4: Simplify right side
369.13x = 112,890.05 - Step 5: Solve for x
x = 112,890.05/369.13 - Step 6: Final answer
x = 305.83
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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.