Finding the Fourth Proportional to 420.99, 581.09 and 273.65
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Solution
The fourth proportional to 420.99, 581.09 and 273.65 is: 377.72
Step by Step Solution
- Step 1: Write the proportion equation
420.99 : 581.09 = 273.65 : x - Step 2: Convert to fraction form
420.99/581.09 = 273.65/x - Step 3: Cross multiply
420.99x = 581.09 × 273.65 - Step 4: Simplify right side
420.99x = 159,015.28 - Step 5: Solve for x
x = 159,015.28/420.99 - Step 6: Final answer
x = 377.72
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.