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Finding the Fourth Proportional to 587.23, 879.67 and 279.38

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Solution

The fourth proportional to 587.23, 879.67 and 279.38 is: 418.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.23 : 879.67 = 279.38 : x
  2. Step 2: Convert to fraction form
    587.23/879.67 = 279.38/x
  3. Step 3: Cross multiply
    587.23x = 879.67 × 279.38
  4. Step 4: Simplify right side
    587.23x = 245,764.75
  5. Step 5: Solve for x
    x = 245,764.75/587.23
  6. Step 6: Final answer
    x = 418.51

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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.