Home / 1,115.19-1,672.83-293.49

Finding the Fourth Proportional to 1,115.19, 1,672.83 and 293.49

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Solution

The fourth proportional to 1,115.19, 1,672.83 and 293.49 is: 440.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115.19 : 1,672.83 = 293.49 : x
  2. Step 2: Convert to fraction form
    1,115.19/1,672.83 = 293.49/x
  3. Step 3: Cross multiply
    1,115.19x = 1,672.83 × 293.49
  4. Step 4: Simplify right side
    1,115.19x = 490,958.88
  5. Step 5: Solve for x
    x = 490,958.88/1,115.19
  6. Step 6: Final answer
    x = 440.25

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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.