Finding the Fourth Proportional to 210.99, 291.14 and 137.44
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Solution
The fourth proportional to 210.99, 291.14 and 137.44 is: 189.65
Step by Step Solution
- Step 1: Write the proportion equation
210.99 : 291.14 = 137.44 : x - Step 2: Convert to fraction form
210.99/291.14 = 137.44/x - Step 3: Cross multiply
210.99x = 291.14 × 137.44 - Step 4: Simplify right side
210.99x = 40,014.28 - Step 5: Solve for x
x = 40,014.28/210.99 - Step 6: Final answer
x = 189.65
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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.