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Finding the Fourth Proportional to 552.38, 828.57 and 227.78

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Solution

The fourth proportional to 552.38, 828.57 and 227.78 is: 341.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.38 : 828.57 = 227.78 : x
  2. Step 2: Convert to fraction form
    552.38/828.57 = 227.78/x
  3. Step 3: Cross multiply
    552.38x = 828.57 × 227.78
  4. Step 4: Simplify right side
    552.38x = 188,731.67
  5. Step 5: Solve for x
    x = 188,731.67/552.38
  6. Step 6: Final answer
    x = 341.67

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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.