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Finding the Fourth Proportional to 1,592.43, 2,388.74 and 422.41

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Solution

The fourth proportional to 1,592.43, 2,388.74 and 422.41 is: 633.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,592.43 : 2,388.74 = 422.41 : x
  2. Step 2: Convert to fraction form
    1,592.43/2,388.74 = 422.41/x
  3. Step 3: Cross multiply
    1,592.43x = 2,388.74 × 422.41
  4. Step 4: Simplify right side
    1,592.43x = 1,009,026.43
  5. Step 5: Solve for x
    x = 1,009,026.43/1,592.43
  6. Step 6: Final answer
    x = 633.64

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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.