Home / 1,115.28-1,672.77-293.57

Finding the Fourth Proportional to 1,115.28, 1,672.77 and 293.57

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Solution

The fourth proportional to 1,115.28, 1,672.77 and 293.57 is: 440.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115.28 : 1,672.77 = 293.57 : x
  2. Step 2: Convert to fraction form
    1,115.28/1,672.77 = 293.57/x
  3. Step 3: Cross multiply
    1,115.28x = 1,672.77 × 293.57
  4. Step 4: Simplify right side
    1,115.28x = 491,066.73
  5. Step 5: Solve for x
    x = 491,066.73/1,115.28
  6. Step 6: Final answer
    x = 440.31

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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.