Finding the Fourth Proportional to 842.64, 1,264.44 and 330
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Solution
The fourth proportional to 842.64, 1,264.44 and 330 is: 495.19
Step by Step Solution
- Step 1: Write the proportion equation
842.64 : 1,264.44 = 330 : x - Step 2: Convert to fraction form
842.64/1,264.44 = 330/x - Step 3: Cross multiply
842.64x = 1,264.44 × 330 - Step 4: Simplify right side
842.64x = 417,265.20 - Step 5: Solve for x
x = 417,265.20/842.64 - Step 6: Final answer
x = 495.19
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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.