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Finding the Fourth Proportional to 1,479.78, 2,041.92 and 850.32

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Solution

The fourth proportional to 1,479.78, 2,041.92 and 850.32 is: 1,173.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,479.78 : 2,041.92 = 850.32 : x
  2. Step 2: Convert to fraction form
    1,479.78/2,041.92 = 850.32/x
  3. Step 3: Cross multiply
    1,479.78x = 2,041.92 × 850.32
  4. Step 4: Simplify right side
    1,479.78x = 1,736,285.41
  5. Step 5: Solve for x
    x = 1,736,285.41/1,479.78
  6. Step 6: Final answer
    x = 1,173.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.