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Finding the Fourth Proportional to 587.16, 879.51 and 279.27

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Solution

The fourth proportional to 587.16, 879.51 and 279.27 is: 418.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.16 : 879.51 = 279.27 : x
  2. Step 2: Convert to fraction form
    587.16/879.51 = 279.27/x
  3. Step 3: Cross multiply
    587.16x = 879.51 × 279.27
  4. Step 4: Simplify right side
    587.16x = 245,620.76
  5. Step 5: Solve for x
    x = 245,620.76/587.16
  6. Step 6: Final answer
    x = 418.32

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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.