Finding the Fourth Proportional to 986.38, 1,479.57 and 256.01
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Solution
The fourth proportional to 986.38, 1,479.57 and 256.01 is: 384.02
Step by Step Solution
- Step 1: Write the proportion equation
986.38 : 1,479.57 = 256.01 : x - Step 2: Convert to fraction form
986.38/1,479.57 = 256.01/x - Step 3: Cross multiply
986.38x = 1,479.57 × 256.01 - Step 4: Simplify right side
986.38x = 378,784.68 - Step 5: Solve for x
x = 378,784.68/986.38 - Step 6: Final answer
x = 384.02
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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.