Home / 1,580.11-2,369.97-485.23

Finding the Fourth Proportional to 1,580.11, 2,369.97 and 485.23

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Solution

The fourth proportional to 1,580.11, 2,369.97 and 485.23 is: 727.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,580.11 : 2,369.97 = 485.23 : x
  2. Step 2: Convert to fraction form
    1,580.11/2,369.97 = 485.23/x
  3. Step 3: Cross multiply
    1,580.11x = 2,369.97 × 485.23
  4. Step 4: Simplify right side
    1,580.11x = 1,149,980.54
  5. Step 5: Solve for x
    x = 1,149,980.54/1,580.11
  6. Step 6: Final answer
    x = 727.79

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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.