Home / 1,515.16-2,272.68-475.19

Finding the Fourth Proportional to 1,515.16, 2,272.68 and 475.19

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Solution

The fourth proportional to 1,515.16, 2,272.68 and 475.19 is: 712.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.16 : 2,272.68 = 475.19 : x
  2. Step 2: Convert to fraction form
    1,515.16/2,272.68 = 475.19/x
  3. Step 3: Cross multiply
    1,515.16x = 2,272.68 × 475.19
  4. Step 4: Simplify right side
    1,515.16x = 1,079,956.69
  5. Step 5: Solve for x
    x = 1,079,956.69/1,515.16
  6. Step 6: Final answer
    x = 712.77

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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.