Finding the Fourth Proportional to 485.99, 728.68 and 303.74
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Solution
The fourth proportional to 485.99, 728.68 and 303.74 is: 455.42
Step by Step Solution
- Step 1: Write the proportion equation
485.99 : 728.68 = 303.74 : x - Step 2: Convert to fraction form
485.99/728.68 = 303.74/x - Step 3: Cross multiply
485.99x = 728.68 × 303.74 - Step 4: Simplify right side
485.99x = 221,329.26 - Step 5: Solve for x
x = 221,329.26/485.99 - Step 6: Final answer
x = 455.42
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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.