Finding the Fourth Proportional to 288.99, 398.97 and 191.01
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Solution
The fourth proportional to 288.99, 398.97 and 191.01 is: 263.70
Step by Step Solution
- Step 1: Write the proportion equation
288.99 : 398.97 = 191.01 : x - Step 2: Convert to fraction form
288.99/398.97 = 191.01/x - Step 3: Cross multiply
288.99x = 398.97 × 191.01 - Step 4: Simplify right side
288.99x = 76,207.26 - Step 5: Solve for x
x = 76,207.26/288.99 - Step 6: Final answer
x = 263.70
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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.