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Finding the Fourth Proportional to 671.82, 926.90 and 423.39

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Solution

The fourth proportional to 671.82, 926.90 and 423.39 is: 584.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.82 : 926.90 = 423.39 : x
  2. Step 2: Convert to fraction form
    671.82/926.90 = 423.39/x
  3. Step 3: Cross multiply
    671.82x = 926.90 × 423.39
  4. Step 4: Simplify right side
    671.82x = 392,438.07
  5. Step 5: Solve for x
    x = 392,438.07/671.82
  6. Step 6: Final answer
    x = 584.14

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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.