Finding the Fourth Proportional to 421.08, 631.62 and 177.77
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Solution
The fourth proportional to 421.08, 631.62 and 177.77 is: 266.66
Step by Step Solution
- Step 1: Write the proportion equation
421.08 : 631.62 = 177.77 : x - Step 2: Convert to fraction form
421.08/631.62 = 177.77/x - Step 3: Cross multiply
421.08x = 631.62 × 177.77 - Step 4: Simplify right side
421.08x = 112,283.09 - Step 5: Solve for x
x = 112,283.09/421.08 - Step 6: Final answer
x = 266.66
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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.