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Finding the Fourth Proportional to 626.51, 939.74 and 193.68

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Solution

The fourth proportional to 626.51, 939.74 and 193.68 is: 290.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.51 : 939.74 = 193.68 : x
  2. Step 2: Convert to fraction form
    626.51/939.74 = 193.68/x
  3. Step 3: Cross multiply
    626.51x = 939.74 × 193.68
  4. Step 4: Simplify right side
    626.51x = 182,007.87
  5. Step 5: Solve for x
    x = 182,007.87/626.51
  6. Step 6: Final answer
    x = 290.51

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1.5x scale

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.