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Finding the Fourth Proportional to 892.74, 1,339.09 and 482.68

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Solution

The fourth proportional to 892.74, 1,339.09 and 482.68 is: 724.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    892.74 : 1,339.09 = 482.68 : x
  2. Step 2: Convert to fraction form
    892.74/1,339.09 = 482.68/x
  3. Step 3: Cross multiply
    892.74x = 1,339.09 × 482.68
  4. Step 4: Simplify right side
    892.74x = 646,342.85
  5. Step 5: Solve for x
    x = 646,342.85/892.74
  6. Step 6: Final answer
    x = 724.00

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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.