Finding the Fourth Proportional to 221.48, 305.52 and 207.08
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Solution
The fourth proportional to 221.48, 305.52 and 207.08 is: 285.66
Step by Step Solution
- Step 1: Write the proportion equation
221.48 : 305.52 = 207.08 : x - Step 2: Convert to fraction form
221.48/305.52 = 207.08/x - Step 3: Cross multiply
221.48x = 305.52 × 207.08 - Step 4: Simplify right side
221.48x = 63,267.08 - Step 5: Solve for x
x = 63,267.08/221.48 - Step 6: Final answer
x = 285.66
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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.