Home / 1,357.20-2,033.94-990.27

Finding the Fourth Proportional to 1,357.20, 2,033.94 and 990.27

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Solution

The fourth proportional to 1,357.20, 2,033.94 and 990.27 is: 1,484.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,357.20 : 2,033.94 = 990.27 : x
  2. Step 2: Convert to fraction form
    1,357.20/2,033.94 = 990.27/x
  3. Step 3: Cross multiply
    1,357.20x = 2,033.94 × 990.27
  4. Step 4: Simplify right side
    1,357.20x = 2,014,149.76
  5. Step 5: Solve for x
    x = 2,014,149.76/1,357.20
  6. Step 6: Final answer
    x = 1,484.05

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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.