Home / 1,516.05-2,273.61-420.15

Finding the Fourth Proportional to 1,516.05, 2,273.61 and 420.15

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Solution

The fourth proportional to 1,516.05, 2,273.61 and 420.15 is: 630.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,516.05 : 2,273.61 = 420.15 : x
  2. Step 2: Convert to fraction form
    1,516.05/2,273.61 = 420.15/x
  3. Step 3: Cross multiply
    1,516.05x = 2,273.61 × 420.15
  4. Step 4: Simplify right side
    1,516.05x = 955,257.24
  5. Step 5: Solve for x
    x = 955,257.24/1,516.05
  6. Step 6: Final answer
    x = 630.10

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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.