Finding the Fourth Proportional to 266.96, 399.96 and 138.32
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Solution
The fourth proportional to 266.96, 399.96 and 138.32 is: 207.23
Step by Step Solution
- Step 1: Write the proportion equation
266.96 : 399.96 = 138.32 : x - Step 2: Convert to fraction form
266.96/399.96 = 138.32/x - Step 3: Cross multiply
266.96x = 399.96 × 138.32 - Step 4: Simplify right side
266.96x = 55,322.47 - Step 5: Solve for x
x = 55,322.47/266.96 - Step 6: Final answer
x = 207.23
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.