Home / 1,190.40-1,786.80-574.60

Finding the Fourth Proportional to 1,190.40, 1,786.80 and 574.60

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Solution

The fourth proportional to 1,190.40, 1,786.80 and 574.60 is: 862.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190.40 : 1,786.80 = 574.60 : x
  2. Step 2: Convert to fraction form
    1,190.40/1,786.80 = 574.60/x
  3. Step 3: Cross multiply
    1,190.40x = 1,786.80 × 574.60
  4. Step 4: Simplify right side
    1,190.40x = 1,026,695.28
  5. Step 5: Solve for x
    x = 1,026,695.28/1,190.40
  6. Step 6: Final answer
    x = 862.48

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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.