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Finding the Fourth Proportional to 679, 934.96 and 580.54

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Solution

The fourth proportional to 679, 934.96 and 580.54 is: 799.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    679 : 934.96 = 580.54 : x
  2. Step 2: Convert to fraction form
    679/934.96 = 580.54/x
  3. Step 3: Cross multiply
    679x = 934.96 × 580.54
  4. Step 4: Simplify right side
    679x = 542,781.68
  5. Step 5: Solve for x
    x = 542,781.68/679
  6. Step 6: Final answer
    x = 799.38

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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.