Finding the Fourth Proportional to 430.99, 647.18 and 409.07
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Solution
The fourth proportional to 430.99, 647.18 and 409.07 is: 614.27
Step by Step Solution
- Step 1: Write the proportion equation
430.99 : 647.18 = 409.07 : x - Step 2: Convert to fraction form
430.99/647.18 = 409.07/x - Step 3: Cross multiply
430.99x = 647.18 × 409.07 - Step 4: Simplify right side
430.99x = 264,741.92 - Step 5: Solve for x
x = 264,741.92/430.99 - Step 6: Final answer
x = 614.27
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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.