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Finding the Fourth Proportional to 674.79, 932.22 and 453.66

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Solution

The fourth proportional to 674.79, 932.22 and 453.66 is: 626.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.79 : 932.22 = 453.66 : x
  2. Step 2: Convert to fraction form
    674.79/932.22 = 453.66/x
  3. Step 3: Cross multiply
    674.79x = 932.22 × 453.66
  4. Step 4: Simplify right side
    674.79x = 422,910.93
  5. Step 5: Solve for x
    x = 422,910.93/674.79
  6. Step 6: Final answer
    x = 626.73

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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.