Finding the Fourth Proportional to 421.14, 631.73 and 177.68
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Solution
The fourth proportional to 421.14, 631.73 and 177.68 is: 266.54
Step by Step Solution
- Step 1: Write the proportion equation
421.14 : 631.73 = 177.68 : x - Step 2: Convert to fraction form
421.14/631.73 = 177.68/x - Step 3: Cross multiply
421.14x = 631.73 × 177.68 - Step 4: Simplify right side
421.14x = 112,247.81 - Step 5: Solve for x
x = 112,247.81/421.14 - Step 6: Final answer
x = 266.54
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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.