Home / 1,515.38-2,272.11-475.07

Finding the Fourth Proportional to 1,515.38, 2,272.11 and 475.07

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Solution

The fourth proportional to 1,515.38, 2,272.11 and 475.07 is: 712.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.38 : 2,272.11 = 475.07 : x
  2. Step 2: Convert to fraction form
    1,515.38/2,272.11 = 475.07/x
  3. Step 3: Cross multiply
    1,515.38x = 2,272.11 × 475.07
  4. Step 4: Simplify right side
    1,515.38x = 1,079,411.30
  5. Step 5: Solve for x
    x = 1,079,411.30/1,515.38
  6. Step 6: Final answer
    x = 712.30

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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.