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Finding the Fourth Proportional to 671.92, 926.39 and 435.46

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Solution

The fourth proportional to 671.92, 926.39 and 435.46 is: 600.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.92 : 926.39 = 435.46 : x
  2. Step 2: Convert to fraction form
    671.92/926.39 = 435.46/x
  3. Step 3: Cross multiply
    671.92x = 926.39 × 435.46
  4. Step 4: Simplify right side
    671.92x = 403,405.79
  5. Step 5: Solve for x
    x = 403,405.79/671.92
  6. Step 6: Final answer
    x = 600.38

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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.