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Finding the Fourth Proportional to 792.67, 1,189.00 and 528.56

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Solution

The fourth proportional to 792.67, 1,189.00 and 528.56 is: 792.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    792.67 : 1,189.00 = 528.56 : x
  2. Step 2: Convert to fraction form
    792.67/1,189.00 = 528.56/x
  3. Step 3: Cross multiply
    792.67x = 1,189.00 × 528.56
  4. Step 4: Simplify right side
    792.67x = 628,459.49
  5. Step 5: Solve for x
    x = 628,459.49/792.67
  6. Step 6: Final answer
    x = 792.84

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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.