Finding the Fourth Proportional to 288.42, 397.74 and 189.99
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Solution
The fourth proportional to 288.42, 397.74 and 189.99 is: 262.00
Step by Step Solution
- Step 1: Write the proportion equation
288.42 : 397.74 = 189.99 : x - Step 2: Convert to fraction form
288.42/397.74 = 189.99/x - Step 3: Cross multiply
288.42x = 397.74 × 189.99 - Step 4: Simplify right side
288.42x = 75,566.62 - Step 5: Solve for x
x = 75,566.62/288.42 - Step 6: Final answer
x = 262.00
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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.