Home / 1,515.42-2,273.34-541.80

Finding the Fourth Proportional to 1,515.42, 2,273.34 and 541.80

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Solution

The fourth proportional to 1,515.42, 2,273.34 and 541.80 is: 812.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.42 : 2,273.34 = 541.80 : x
  2. Step 2: Convert to fraction form
    1,515.42/2,273.34 = 541.80/x
  3. Step 3: Cross multiply
    1,515.42x = 2,273.34 × 541.80
  4. Step 4: Simplify right side
    1,515.42x = 1,231,695.61
  5. Step 5: Solve for x
    x = 1,231,695.61/1,515.42
  6. Step 6: Final answer
    x = 812.78

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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.