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Finding the Fourth Proportional to 792.04, 1,090.62 and 693.22

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Solution

The fourth proportional to 792.04, 1,090.62 and 693.22 is: 954.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    792.04 : 1,090.62 = 693.22 : x
  2. Step 2: Convert to fraction form
    792.04/1,090.62 = 693.22/x
  3. Step 3: Cross multiply
    792.04x = 1,090.62 × 693.22
  4. Step 4: Simplify right side
    792.04x = 756,039.60
  5. Step 5: Solve for x
    x = 756,039.60/792.04
  6. Step 6: Final answer
    x = 954.55

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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.