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Finding the Fourth Proportional to 674.66, 935.28 and 637.71

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Solution

The fourth proportional to 674.66, 935.28 and 637.71 is: 884.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.66 : 935.28 = 637.71 : x
  2. Step 2: Convert to fraction form
    674.66/935.28 = 637.71/x
  3. Step 3: Cross multiply
    674.66x = 935.28 × 637.71
  4. Step 4: Simplify right side
    674.66x = 596,433.90
  5. Step 5: Solve for x
    x = 596,433.90/674.66
  6. Step 6: Final answer
    x = 884.05

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.