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Finding the Fourth Proportional to 626.83, 938.85 and 611.34

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Solution

The fourth proportional to 626.83, 938.85 and 611.34 is: 915.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.83 : 938.85 = 611.34 : x
  2. Step 2: Convert to fraction form
    626.83/938.85 = 611.34/x
  3. Step 3: Cross multiply
    626.83x = 938.85 × 611.34
  4. Step 4: Simplify right side
    626.83x = 573,956.56
  5. Step 5: Solve for x
    x = 573,956.56/626.83
  6. Step 6: Final answer
    x = 915.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.