Home / 1,231.62-1,845.57-580.74

Finding the Fourth Proportional to 1,231.62, 1,845.57 and 580.74

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Solution

The fourth proportional to 1,231.62, 1,845.57 and 580.74 is: 870.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231.62 : 1,845.57 = 580.74 : x
  2. Step 2: Convert to fraction form
    1,231.62/1,845.57 = 580.74/x
  3. Step 3: Cross multiply
    1,231.62x = 1,845.57 × 580.74
  4. Step 4: Simplify right side
    1,231.62x = 1,071,796.32
  5. Step 5: Solve for x
    x = 1,071,796.32/1,231.62
  6. Step 6: Final answer
    x = 870.23

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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.