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Finding the Fourth Proportional to 613.87, 920.85 and 467.86

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Solution

The fourth proportional to 613.87, 920.85 and 467.86 is: 701.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.87 : 920.85 = 467.86 : x
  2. Step 2: Convert to fraction form
    613.87/920.85 = 467.86/x
  3. Step 3: Cross multiply
    613.87x = 920.85 × 467.86
  4. Step 4: Simplify right side
    613.87x = 430,828.88
  5. Step 5: Solve for x
    x = 430,828.88/613.87
  6. Step 6: Final answer
    x = 701.82

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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.