Finding the Fourth Proportional to 420, 579.65 and 293.99
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Solution
The fourth proportional to 420, 579.65 and 293.99 is: 405.73
Step by Step Solution
- Step 1: Write the proportion equation
420 : 579.65 = 293.99 : x - Step 2: Convert to fraction form
420/579.65 = 293.99/x - Step 3: Cross multiply
420x = 579.65 × 293.99 - Step 4: Simplify right side
420x = 170,406.94 - Step 5: Solve for x
x = 170,406.94/420 - Step 6: Final answer
x = 405.73
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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.