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Finding the Fourth Proportional to 1,662.91, 2,494.71 and 622.90

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Solution

The fourth proportional to 1,662.91, 2,494.71 and 622.90 is: 934.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,662.91 : 2,494.71 = 622.90 : x
  2. Step 2: Convert to fraction form
    1,662.91/2,494.71 = 622.90/x
  3. Step 3: Cross multiply
    1,662.91x = 2,494.71 × 622.90
  4. Step 4: Simplify right side
    1,662.91x = 1,553,954.86
  5. Step 5: Solve for x
    x = 1,553,954.86/1,662.91
  6. Step 6: Final answer
    x = 934.48

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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.