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Finding the Fourth Proportional to 671.38, 925.17 and 484.54

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Solution

The fourth proportional to 671.38, 925.17 and 484.54 is: 667.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.38 : 925.17 = 484.54 : x
  2. Step 2: Convert to fraction form
    671.38/925.17 = 484.54/x
  3. Step 3: Cross multiply
    671.38x = 925.17 × 484.54
  4. Step 4: Simplify right side
    671.38x = 448,281.87
  5. Step 5: Solve for x
    x = 448,281.87/671.38
  6. Step 6: Final answer
    x = 667.70

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Double scale
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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.