Finding the Fourth Proportional to 421.65, 632.25 and 177.99
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Solution
The fourth proportional to 421.65, 632.25 and 177.99 is: 266.89
Step by Step Solution
- Step 1: Write the proportion equation
421.65 : 632.25 = 177.99 : x - Step 2: Convert to fraction form
421.65/632.25 = 177.99/x - Step 3: Cross multiply
421.65x = 632.25 × 177.99 - Step 4: Simplify right side
421.65x = 112,534.18 - Step 5: Solve for x
x = 112,534.18/421.65 - Step 6: Final answer
x = 266.89
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.