Home / 1,515.28-2,272.98-475.38

Finding the Fourth Proportional to 1,515.28, 2,272.98 and 475.38

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Solution

The fourth proportional to 1,515.28, 2,272.98 and 475.38 is: 713.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.28 : 2,272.98 = 475.38 : x
  2. Step 2: Convert to fraction form
    1,515.28/2,272.98 = 475.38/x
  3. Step 3: Cross multiply
    1,515.28x = 2,272.98 × 475.38
  4. Step 4: Simplify right side
    1,515.28x = 1,080,526.86
  5. Step 5: Solve for x
    x = 1,080,526.86/1,515.28
  6. Step 6: Final answer
    x = 713.09

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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.