Home / 1,515.11-2,272.66-475.07

Finding the Fourth Proportional to 1,515.11, 2,272.66 and 475.07

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Solution

The fourth proportional to 1,515.11, 2,272.66 and 475.07 is: 712.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.11 : 2,272.66 = 475.07 : x
  2. Step 2: Convert to fraction form
    1,515.11/2,272.66 = 475.07/x
  3. Step 3: Cross multiply
    1,515.11x = 2,272.66 × 475.07
  4. Step 4: Simplify right side
    1,515.11x = 1,079,660.04
  5. Step 5: Solve for x
    x = 1,079,660.04/1,515.11
  6. Step 6: Final answer
    x = 712.60

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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.