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Finding the Fourth Proportional to 614.44, 847.92 and 404.92

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Solution

The fourth proportional to 614.44, 847.92 and 404.92 is: 558.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.44 : 847.92 = 404.92 : x
  2. Step 2: Convert to fraction form
    614.44/847.92 = 404.92/x
  3. Step 3: Cross multiply
    614.44x = 847.92 × 404.92
  4. Step 4: Simplify right side
    614.44x = 343,339.77
  5. Step 5: Solve for x
    x = 343,339.77/614.44
  6. Step 6: Final answer
    x = 558.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.