Finding the Fourth Proportional to 421.19, 631.91 and 177.73
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Solution
The fourth proportional to 421.19, 631.91 and 177.73 is: 266.65
Step by Step Solution
- Step 1: Write the proportion equation
421.19 : 631.91 = 177.73 : x - Step 2: Convert to fraction form
421.19/631.91 = 177.73/x - Step 3: Cross multiply
421.19x = 631.91 × 177.73 - Step 4: Simplify right side
421.19x = 112,309.36 - Step 5: Solve for x
x = 112,309.36/421.19 - Step 6: Final answer
x = 266.65
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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.