Finding the Fourth Proportional to 207.18, 285.69 and 177.78
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Solution
The fourth proportional to 207.18, 285.69 and 177.78 is: 245.15
Step by Step Solution
- Step 1: Write the proportion equation
207.18 : 285.69 = 177.78 : x - Step 2: Convert to fraction form
207.18/285.69 = 177.78/x - Step 3: Cross multiply
207.18x = 285.69 × 177.78 - Step 4: Simplify right side
207.18x = 50,789.97 - Step 5: Solve for x
x = 50,789.97/207.18 - Step 6: Final answer
x = 245.15
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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.