Home / 1,515.04-2,272.19-419.49

Finding the Fourth Proportional to 1,515.04, 2,272.19 and 419.49

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Solution

The fourth proportional to 1,515.04, 2,272.19 and 419.49 is: 629.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.04 : 2,272.19 = 419.49 : x
  2. Step 2: Convert to fraction form
    1,515.04/2,272.19 = 419.49/x
  3. Step 3: Cross multiply
    1,515.04x = 2,272.19 × 419.49
  4. Step 4: Simplify right side
    1,515.04x = 953,158.89
  5. Step 5: Solve for x
    x = 953,158.89/1,515.04
  6. Step 6: Final answer
    x = 629.13

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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.