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Finding the Fourth Proportional to 674.46, 928.89 and 630.54

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Solution

The fourth proportional to 674.46, 928.89 and 630.54 is: 868.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.46 : 928.89 = 630.54 : x
  2. Step 2: Convert to fraction form
    674.46/928.89 = 630.54/x
  3. Step 3: Cross multiply
    674.46x = 928.89 × 630.54
  4. Step 4: Simplify right side
    674.46x = 585,702.30
  5. Step 5: Solve for x
    x = 585,702.30/674.46
  6. Step 6: Final answer
    x = 868.40

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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.