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Finding the Fourth Proportional to 792.53, 1,194.21 and 651.41

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Solution

The fourth proportional to 792.53, 1,194.21 and 651.41 is: 981.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    792.53 : 1,194.21 = 651.41 : x
  2. Step 2: Convert to fraction form
    792.53/1,194.21 = 651.41/x
  3. Step 3: Cross multiply
    792.53x = 1,194.21 × 651.41
  4. Step 4: Simplify right side
    792.53x = 777,918.71
  5. Step 5: Solve for x
    x = 777,918.71/792.53
  6. Step 6: Final answer
    x = 981.56

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.