Finding the Fourth Proportional to 905.25, 1,358.08 and 288.99
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Solution
The fourth proportional to 905.25, 1,358.08 and 288.99 is: 433.55
Step by Step Solution
- Step 1: Write the proportion equation
905.25 : 1,358.08 = 288.99 : x - Step 2: Convert to fraction form
905.25/1,358.08 = 288.99/x - Step 3: Cross multiply
905.25x = 1,358.08 × 288.99 - Step 4: Simplify right side
905.25x = 392,471.54 - Step 5: Solve for x
x = 392,471.54/905.25 - Step 6: Final answer
x = 433.55
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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.