Home / 1,660.14-2,490.30-505.92

Finding the Fourth Proportional to 1,660.14, 2,490.30 and 505.92

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Solution

The fourth proportional to 1,660.14, 2,490.30 and 505.92 is: 758.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,660.14 : 2,490.30 = 505.92 : x
  2. Step 2: Convert to fraction form
    1,660.14/2,490.30 = 505.92/x
  3. Step 3: Cross multiply
    1,660.14x = 2,490.30 × 505.92
  4. Step 4: Simplify right side
    1,660.14x = 1,259,892.58
  5. Step 5: Solve for x
    x = 1,259,892.58/1,660.14
  6. Step 6: Final answer
    x = 758.91

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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.