Finding the Fourth Proportional to 390.02, 584.97 and 170.74
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Solution
The fourth proportional to 390.02, 584.97 and 170.74 is: 256.08
Step by Step Solution
- Step 1: Write the proportion equation
390.02 : 584.97 = 170.74 : x - Step 2: Convert to fraction form
390.02/584.97 = 170.74/x - Step 3: Cross multiply
390.02x = 584.97 × 170.74 - Step 4: Simplify right side
390.02x = 99,877.78 - Step 5: Solve for x
x = 99,877.78/390.02 - Step 6: Final answer
x = 256.08
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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.