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Finding the Fourth Proportional to 614.80, 847.72 and 418.44

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Solution

The fourth proportional to 614.80, 847.72 and 418.44 is: 576.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    614.80 : 847.72 = 418.44 : x
  2. Step 2: Convert to fraction form
    614.80/847.72 = 418.44/x
  3. Step 3: Cross multiply
    614.80x = 847.72 × 418.44
  4. Step 4: Simplify right side
    614.80x = 354,719.96
  5. Step 5: Solve for x
    x = 354,719.96/614.80
  6. Step 6: Final answer
    x = 576.97

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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.