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Finding the Fourth Proportional to 626.58, 939.71 and 187.73

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Solution

The fourth proportional to 626.58, 939.71 and 187.73 is: 281.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.58 : 939.71 = 187.73 : x
  2. Step 2: Convert to fraction form
    626.58/939.71 = 187.73/x
  3. Step 3: Cross multiply
    626.58x = 939.71 × 187.73
  4. Step 4: Simplify right side
    626.58x = 176,411.76
  5. Step 5: Solve for x
    x = 176,411.76/626.58
  6. Step 6: Final answer
    x = 281.55

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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.