Home / 1,079.40-1,619.36-348.96

Finding the Fourth Proportional to 1,079.40, 1,619.36 and 348.96

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Solution

The fourth proportional to 1,079.40, 1,619.36 and 348.96 is: 523.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079.40 : 1,619.36 = 348.96 : x
  2. Step 2: Convert to fraction form
    1,079.40/1,619.36 = 348.96/x
  3. Step 3: Cross multiply
    1,079.40x = 1,619.36 × 348.96
  4. Step 4: Simplify right side
    1,079.40x = 565,090.12
  5. Step 5: Solve for x
    x = 565,090.12/1,079.40
  6. Step 6: Final answer
    x = 523.52

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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.