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Finding the Fourth Proportional to 629.93, 944.90 and 191.19

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Solution

The fourth proportional to 629.93, 944.90 and 191.19 is: 286.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.93 : 944.90 = 191.19 : x
  2. Step 2: Convert to fraction form
    629.93/944.90 = 191.19/x
  3. Step 3: Cross multiply
    629.93x = 944.90 × 191.19
  4. Step 4: Simplify right side
    629.93x = 180,655.29
  5. Step 5: Solve for x
    x = 180,655.29/629.93
  6. Step 6: Final answer
    x = 286.78

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Double scale
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Similar ratio
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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.