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Finding the Fourth Proportional to 1,540.41, 2,311.92 and 616.62

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Solution

The fourth proportional to 1,540.41, 2,311.92 and 616.62 is: 925.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,540.41 : 2,311.92 = 616.62 : x
  2. Step 2: Convert to fraction form
    1,540.41/2,311.92 = 616.62/x
  3. Step 3: Cross multiply
    1,540.41x = 2,311.92 × 616.62
  4. Step 4: Simplify right side
    1,540.41x = 1,425,576.11
  5. Step 5: Solve for x
    x = 1,425,576.11/1,540.41
  6. Step 6: Final answer
    x = 925.45

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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.