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Finding the Fourth Proportional to 671.35, 1,004.86 and 346.27

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Solution

The fourth proportional to 671.35, 1,004.86 and 346.27 is: 518.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.35 : 1,004.86 = 346.27 : x
  2. Step 2: Convert to fraction form
    671.35/1,004.86 = 346.27/x
  3. Step 3: Cross multiply
    671.35x = 1,004.86 × 346.27
  4. Step 4: Simplify right side
    671.35x = 347,952.87
  5. Step 5: Solve for x
    x = 347,952.87/671.35
  6. Step 6: Final answer
    x = 518.29

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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.