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Finding the Fourth Proportional to 467.87, 701.35 and 427.78

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Solution

The fourth proportional to 467.87, 701.35 and 427.78 is: 641.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    467.87 : 701.35 = 427.78 : x
  2. Step 2: Convert to fraction form
    467.87/701.35 = 427.78/x
  3. Step 3: Cross multiply
    467.87x = 701.35 × 427.78
  4. Step 4: Simplify right side
    467.87x = 300,023.50
  5. Step 5: Solve for x
    x = 300,023.50/467.87
  6. Step 6: Final answer
    x = 641.25

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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.