Home / 1,082.20-1,623.30-351.80

Finding the Fourth Proportional to 1,082.20, 1,623.30 and 351.80

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Solution

The fourth proportional to 1,082.20, 1,623.30 and 351.80 is: 527.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,082.20 : 1,623.30 = 351.80 : x
  2. Step 2: Convert to fraction form
    1,082.20/1,623.30 = 351.80/x
  3. Step 3: Cross multiply
    1,082.20x = 1,623.30 × 351.80
  4. Step 4: Simplify right side
    1,082.20x = 571,076.94
  5. Step 5: Solve for x
    x = 571,076.94/1,082.20
  6. Step 6: Final answer
    x = 527.70

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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.