Finding the Fourth Proportional to 430.99, 645.84 and 368.96
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Solution
The fourth proportional to 430.99, 645.84 and 368.96 is: 552.88
Step by Step Solution
- Step 1: Write the proportion equation
430.99 : 645.84 = 368.96 : x - Step 2: Convert to fraction form
430.99/645.84 = 368.96/x - Step 3: Cross multiply
430.99x = 645.84 × 368.96 - Step 4: Simplify right side
430.99x = 238,285.90 - Step 5: Solve for x
x = 238,285.90/430.99 - Step 6: Final answer
x = 552.88
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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.