Home / 1,515.49-2,273.02-419.96

Finding the Fourth Proportional to 1,515.49, 2,273.02 and 419.96

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Solution

The fourth proportional to 1,515.49, 2,273.02 and 419.96 is: 629.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.49 : 2,273.02 = 419.96 : x
  2. Step 2: Convert to fraction form
    1,515.49/2,273.02 = 419.96/x
  3. Step 3: Cross multiply
    1,515.49x = 2,273.02 × 419.96
  4. Step 4: Simplify right side
    1,515.49x = 954,577.48
  5. Step 5: Solve for x
    x = 954,577.48/1,515.49
  6. Step 6: Final answer
    x = 629.88

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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.