Finding the Fourth Proportional to 230.23, 345.44 and 138.99
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Solution
The fourth proportional to 230.23, 345.44 and 138.99 is: 208.54
Step by Step Solution
- Step 1: Write the proportion equation
230.23 : 345.44 = 138.99 : x - Step 2: Convert to fraction form
230.23/345.44 = 138.99/x - Step 3: Cross multiply
230.23x = 345.44 × 138.99 - Step 4: Simplify right side
230.23x = 48,012.71 - Step 5: Solve for x
x = 48,012.71/230.23 - Step 6: Final answer
x = 208.54
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.