Home / 1,515.05-2,272.57-419.41

Finding the Fourth Proportional to 1,515.05, 2,272.57 and 419.41

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Solution

The fourth proportional to 1,515.05, 2,272.57 and 419.41 is: 629.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.05 : 2,272.57 = 419.41 : x
  2. Step 2: Convert to fraction form
    1,515.05/2,272.57 = 419.41/x
  3. Step 3: Cross multiply
    1,515.05x = 2,272.57 × 419.41
  4. Step 4: Simplify right side
    1,515.05x = 953,125.12
  5. Step 5: Solve for x
    x = 953,125.12/1,515.05
  6. Step 6: Final answer
    x = 629.10

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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.