Finding the Fourth Proportional to 247.11, 340.99 and 136.58
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Solution
The fourth proportional to 247.11, 340.99 and 136.58 is: 188.47
Step by Step Solution
- Step 1: Write the proportion equation
247.11 : 340.99 = 136.58 : x - Step 2: Convert to fraction form
247.11/340.99 = 136.58/x - Step 3: Cross multiply
247.11x = 340.99 × 136.58 - Step 4: Simplify right side
247.11x = 46,572.41 - Step 5: Solve for x
x = 46,572.41/247.11 - Step 6: Final answer
x = 188.47
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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.