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Finding the Fourth Proportional to 674.25, 930.66 and 441.39

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Solution

The fourth proportional to 674.25, 930.66 and 441.39 is: 609.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.25 : 930.66 = 441.39 : x
  2. Step 2: Convert to fraction form
    674.25/930.66 = 441.39/x
  3. Step 3: Cross multiply
    674.25x = 930.66 × 441.39
  4. Step 4: Simplify right side
    674.25x = 410,784.02
  5. Step 5: Solve for x
    x = 410,784.02/674.25
  6. Step 6: Final answer
    x = 609.25

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Half scale
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Double scale
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Similar ratio
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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.