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Finding the Fourth Proportional to 679.04, 936.15 and 539.62

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Solution

The fourth proportional to 679.04, 936.15 and 539.62 is: 743.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    679.04 : 936.15 = 539.62 : x
  2. Step 2: Convert to fraction form
    679.04/936.15 = 539.62/x
  3. Step 3: Cross multiply
    679.04x = 936.15 × 539.62
  4. Step 4: Simplify right side
    679.04x = 505,165.26
  5. Step 5: Solve for x
    x = 505,165.26/679.04
  6. Step 6: Final answer
    x = 743.94

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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.