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Finding the Fourth Proportional to 674.56, 932.82 and 645.58

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Solution

The fourth proportional to 674.56, 932.82 and 645.58 is: 892.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.56 : 932.82 = 645.58 : x
  2. Step 2: Convert to fraction form
    674.56/932.82 = 645.58/x
  3. Step 3: Cross multiply
    674.56x = 932.82 × 645.58
  4. Step 4: Simplify right side
    674.56x = 602,209.94
  5. Step 5: Solve for x
    x = 602,209.94/674.56
  6. Step 6: Final answer
    x = 892.74

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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.