Home / 1,231.80-1,848.60-492.12

Finding the Fourth Proportional to 1,231.80, 1,848.60 and 492.12

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Solution

The fourth proportional to 1,231.80, 1,848.60 and 492.12 is: 738.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231.80 : 1,848.60 = 492.12 : x
  2. Step 2: Convert to fraction form
    1,231.80/1,848.60 = 492.12/x
  3. Step 3: Cross multiply
    1,231.80x = 1,848.60 × 492.12
  4. Step 4: Simplify right side
    1,231.80x = 909,733.03
  5. Step 5: Solve for x
    x = 909,733.03/1,231.80
  6. Step 6: Final answer
    x = 738.54

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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.