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Finding the Fourth Proportional to 671.79, 928.08 and 450.66

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Solution

The fourth proportional to 671.79, 928.08 and 450.66 is: 622.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.79 : 928.08 = 450.66 : x
  2. Step 2: Convert to fraction form
    671.79/928.08 = 450.66/x
  3. Step 3: Cross multiply
    671.79x = 928.08 × 450.66
  4. Step 4: Simplify right side
    671.79x = 418,248.53
  5. Step 5: Solve for x
    x = 418,248.53/671.79
  6. Step 6: Final answer
    x = 622.59

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1.5x scale

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.