Home / 1,660.59-2,491.85-621.30

Finding the Fourth Proportional to 1,660.59, 2,491.85 and 621.30

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Solution

The fourth proportional to 1,660.59, 2,491.85 and 621.30 is: 932.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,660.59 : 2,491.85 = 621.30 : x
  2. Step 2: Convert to fraction form
    1,660.59/2,491.85 = 621.30/x
  3. Step 3: Cross multiply
    1,660.59x = 2,491.85 × 621.30
  4. Step 4: Simplify right side
    1,660.59x = 1,548,183.30
  5. Step 5: Solve for x
    x = 1,548,183.30/1,660.59
  6. Step 6: Final answer
    x = 932.31

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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.