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Finding the Fourth Proportional to 1,697.45, 2,546.16 and 543.20

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Solution

The fourth proportional to 1,697.45, 2,546.16 and 543.20 is: 814.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,697.45 : 2,546.16 = 543.20 : x
  2. Step 2: Convert to fraction form
    1,697.45/2,546.16 = 543.20/x
  3. Step 3: Cross multiply
    1,697.45x = 2,546.16 × 543.20
  4. Step 4: Simplify right side
    1,697.45x = 1,383,061.38
  5. Step 5: Solve for x
    x = 1,383,061.38/1,697.45
  6. Step 6: Final answer
    x = 814.79

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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.