Home / 1,260.08-1,890.11-490.58

Finding the Fourth Proportional to 1,260.08, 1,890.11 and 490.58

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Solution

The fourth proportional to 1,260.08, 1,890.11 and 490.58 is: 735.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260.08 : 1,890.11 = 490.58 : x
  2. Step 2: Convert to fraction form
    1,260.08/1,890.11 = 490.58/x
  3. Step 3: Cross multiply
    1,260.08x = 1,890.11 × 490.58
  4. Step 4: Simplify right side
    1,260.08x = 927,250.16
  5. Step 5: Solve for x
    x = 927,250.16/1,260.08
  6. Step 6: Final answer
    x = 735.87

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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.