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Finding the Fourth Proportional to 587.39, 881.09 and 478.96

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Solution

The fourth proportional to 587.39, 881.09 and 478.96 is: 718.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.39 : 881.09 = 478.96 : x
  2. Step 2: Convert to fraction form
    587.39/881.09 = 478.96/x
  3. Step 3: Cross multiply
    587.39x = 881.09 × 478.96
  4. Step 4: Simplify right side
    587.39x = 422,005.86
  5. Step 5: Solve for x
    x = 422,005.86/587.39
  6. Step 6: Final answer
    x = 718.44

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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.