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Finding the Fourth Proportional to 587.38, 881.18 and 279.39

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Solution

The fourth proportional to 587.38, 881.18 and 279.39 is: 419.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.38 : 881.18 = 279.39 : x
  2. Step 2: Convert to fraction form
    587.38/881.18 = 279.39/x
  3. Step 3: Cross multiply
    587.38x = 881.18 × 279.39
  4. Step 4: Simplify right side
    587.38x = 246,192.88
  5. Step 5: Solve for x
    x = 246,192.88/587.38
  6. Step 6: Final answer
    x = 419.14

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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.