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Finding the Fourth Proportional to 674.85, 930.83 and 426.48

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Solution

The fourth proportional to 674.85, 930.83 and 426.48 is: 588.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.85 : 930.83 = 426.48 : x
  2. Step 2: Convert to fraction form
    674.85/930.83 = 426.48/x
  3. Step 3: Cross multiply
    674.85x = 930.83 × 426.48
  4. Step 4: Simplify right side
    674.85x = 396,980.38
  5. Step 5: Solve for x
    x = 396,980.38/674.85
  6. Step 6: Final answer
    x = 588.25

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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.