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Finding the Fourth Proportional to 587.57, 881.30 and 278.96

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Solution

The fourth proportional to 587.57, 881.30 and 278.96 is: 418.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.57 : 881.30 = 278.96 : x
  2. Step 2: Convert to fraction form
    587.57/881.30 = 278.96/x
  3. Step 3: Cross multiply
    587.57x = 881.30 × 278.96
  4. Step 4: Simplify right side
    587.57x = 245,843.74
  5. Step 5: Solve for x
    x = 245,843.74/587.57
  6. Step 6: Final answer
    x = 418.41

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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.