Finding the Fourth Proportional to 972.09, 1,341.46 and 530
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Solution
The fourth proportional to 972.09, 1,341.46 and 530 is: 731.39
Step by Step Solution
- Step 1: Write the proportion equation
972.09 : 1,341.46 = 530 : x - Step 2: Convert to fraction form
972.09/1,341.46 = 530/x - Step 3: Cross multiply
972.09x = 1,341.46 × 530 - Step 4: Simplify right side
972.09x = 710,973.80 - Step 5: Solve for x
x = 710,973.80/972.09 - Step 6: Final answer
x = 731.39
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.