Home / 1,516.28-2,273.99-420.37

Finding the Fourth Proportional to 1,516.28, 2,273.99 and 420.37

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Solution

The fourth proportional to 1,516.28, 2,273.99 and 420.37 is: 630.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,516.28 : 2,273.99 = 420.37 : x
  2. Step 2: Convert to fraction form
    1,516.28/2,273.99 = 420.37/x
  3. Step 3: Cross multiply
    1,516.28x = 2,273.99 × 420.37
  4. Step 4: Simplify right side
    1,516.28x = 955,909.39
  5. Step 5: Solve for x
    x = 955,909.39/1,516.28
  6. Step 6: Final answer
    x = 630.43

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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.