Home / 1,515.51-2,272.23-475.16

Finding the Fourth Proportional to 1,515.51, 2,272.23 and 475.16

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Solution

The fourth proportional to 1,515.51, 2,272.23 and 475.16 is: 712.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.51 : 2,272.23 = 475.16 : x
  2. Step 2: Convert to fraction form
    1,515.51/2,272.23 = 475.16/x
  3. Step 3: Cross multiply
    1,515.51x = 2,272.23 × 475.16
  4. Step 4: Simplify right side
    1,515.51x = 1,079,661.45
  5. Step 5: Solve for x
    x = 1,079,661.45/1,515.51
  6. Step 6: Final answer
    x = 712.41

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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.