Finding the Fourth Proportional to 390.06, 584.91 and 207.41
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Solution
The fourth proportional to 390.06, 584.91 and 207.41 is: 311.02
Step by Step Solution
- Step 1: Write the proportion equation
390.06 : 584.91 = 207.41 : x - Step 2: Convert to fraction form
390.06/584.91 = 207.41/x - Step 3: Cross multiply
390.06x = 584.91 × 207.41 - Step 4: Simplify right side
390.06x = 121,316.18 - Step 5: Solve for x
x = 121,316.18/390.06 - Step 6: Final answer
x = 311.02
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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.