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Finding the Fourth Proportional to 587.98, 882.20 and 279.97

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Solution

The fourth proportional to 587.98, 882.20 and 279.97 is: 420.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.98 : 882.20 = 279.97 : x
  2. Step 2: Convert to fraction form
    587.98/882.20 = 279.97/x
  3. Step 3: Cross multiply
    587.98x = 882.20 × 279.97
  4. Step 4: Simplify right side
    587.98x = 246,983.72
  5. Step 5: Solve for x
    x = 246,983.72/587.98
  6. Step 6: Final answer
    x = 420.06

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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.