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Finding the Fourth Proportional to 671.70, 925.84 and 450.57

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Solution

The fourth proportional to 671.70, 925.84 and 450.57 is: 621.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.70 : 925.84 = 450.57 : x
  2. Step 2: Convert to fraction form
    671.70/925.84 = 450.57/x
  3. Step 3: Cross multiply
    671.70x = 925.84 × 450.57
  4. Step 4: Simplify right side
    671.70x = 417,155.73
  5. Step 5: Solve for x
    x = 417,155.73/671.70
  6. Step 6: Final answer
    x = 621.04

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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.