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Finding the Fourth Proportional to 679.16, 936.32 and 504.92

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Solution

The fourth proportional to 679.16, 936.32 and 504.92 is: 696.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    679.16 : 936.32 = 504.92 : x
  2. Step 2: Convert to fraction form
    679.16/936.32 = 504.92/x
  3. Step 3: Cross multiply
    679.16x = 936.32 × 504.92
  4. Step 4: Simplify right side
    679.16x = 472,766.69
  5. Step 5: Solve for x
    x = 472,766.69/679.16
  6. Step 6: Final answer
    x = 696.11

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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.