Home / 1,515.13-2,272.86-475.11

Finding the Fourth Proportional to 1,515.13, 2,272.86 and 475.11

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Solution

The fourth proportional to 1,515.13, 2,272.86 and 475.11 is: 712.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.13 : 2,272.86 = 475.11 : x
  2. Step 2: Convert to fraction form
    1,515.13/2,272.86 = 475.11/x
  3. Step 3: Cross multiply
    1,515.13x = 2,272.86 × 475.11
  4. Step 4: Simplify right side
    1,515.13x = 1,079,858.51
  5. Step 5: Solve for x
    x = 1,079,858.51/1,515.13
  6. Step 6: Final answer
    x = 712.72

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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.