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Finding the Fourth Proportional to 626.21, 939.23 and 187.46

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Solution

The fourth proportional to 626.21, 939.23 and 187.46 is: 281.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.21 : 939.23 = 187.46 : x
  2. Step 2: Convert to fraction form
    626.21/939.23 = 187.46/x
  3. Step 3: Cross multiply
    626.21x = 939.23 × 187.46
  4. Step 4: Simplify right side
    626.21x = 176,062.42
  5. Step 5: Solve for x
    x = 176,062.42/626.21
  6. Step 6: Final answer
    x = 281.16

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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.