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Finding the Fourth Proportional to 556.41, 834.69 and 191.22

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Solution

The fourth proportional to 556.41, 834.69 and 191.22 is: 286.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.41 : 834.69 = 191.22 : x
  2. Step 2: Convert to fraction form
    556.41/834.69 = 191.22/x
  3. Step 3: Cross multiply
    556.41x = 834.69 × 191.22
  4. Step 4: Simplify right side
    556.41x = 159,609.42
  5. Step 5: Solve for x
    x = 159,609.42/556.41
  6. Step 6: Final answer
    x = 286.86

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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.