Home / 1,516.46-2,274.66-420.73

Finding the Fourth Proportional to 1,516.46, 2,274.66 and 420.73

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Solution

The fourth proportional to 1,516.46, 2,274.66 and 420.73 is: 631.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,516.46 : 2,274.66 = 420.73 : x
  2. Step 2: Convert to fraction form
    1,516.46/2,274.66 = 420.73/x
  3. Step 3: Cross multiply
    1,516.46x = 2,274.66 × 420.73
  4. Step 4: Simplify right side
    1,516.46x = 957,012.02
  5. Step 5: Solve for x
    x = 957,012.02/1,516.46
  6. Step 6: Final answer
    x = 631.09

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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.