Home / 1,079.64-1,619.38-288.94

Finding the Fourth Proportional to 1,079.64, 1,619.38 and 288.94

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Solution

The fourth proportional to 1,079.64, 1,619.38 and 288.94 is: 433.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,079.64 : 1,619.38 = 288.94 : x
  2. Step 2: Convert to fraction form
    1,079.64/1,619.38 = 288.94/x
  3. Step 3: Cross multiply
    1,079.64x = 1,619.38 × 288.94
  4. Step 4: Simplify right side
    1,079.64x = 467,903.66
  5. Step 5: Solve for x
    x = 467,903.66/1,079.64
  6. Step 6: Final answer
    x = 433.39

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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.