Finding the Fourth Proportional to 221.44, 305.73 and 207.67
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Solution
The fourth proportional to 221.44, 305.73 and 207.67 is: 286.72
Step by Step Solution
- Step 1: Write the proportion equation
221.44 : 305.73 = 207.67 : x - Step 2: Convert to fraction form
221.44/305.73 = 207.67/x - Step 3: Cross multiply
221.44x = 305.73 × 207.67 - Step 4: Simplify right side
221.44x = 63,490.95 - Step 5: Solve for x
x = 63,490.95/221.44 - Step 6: Final answer
x = 286.72
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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.