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Finding the Fourth Proportional to 1,384.32, 2,076.87 and 604.39

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Solution

The fourth proportional to 1,384.32, 2,076.87 and 604.39 is: 906.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384.32 : 2,076.87 = 604.39 : x
  2. Step 2: Convert to fraction form
    1,384.32/2,076.87 = 604.39/x
  3. Step 3: Cross multiply
    1,384.32x = 2,076.87 × 604.39
  4. Step 4: Simplify right side
    1,384.32x = 1,255,236.44
  5. Step 5: Solve for x
    x = 1,255,236.44/1,384.32
  6. Step 6: Final answer
    x = 906.75

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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.