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Finding the Fourth Proportional to 1,515.70, 2,273.55 and 541.68

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Solution

The fourth proportional to 1,515.70, 2,273.55 and 541.68 is: 812.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.70 : 2,273.55 = 541.68 : x
  2. Step 2: Convert to fraction form
    1,515.70/2,273.55 = 541.68/x
  3. Step 3: Cross multiply
    1,515.70x = 2,273.55 × 541.68
  4. Step 4: Simplify right side
    1,515.70x = 1,231,536.56
  5. Step 5: Solve for x
    x = 1,231,536.56/1,515.70
  6. Step 6: Final answer
    x = 812.52

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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.