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Finding the Fourth Proportional to 552.20, 828.53 and 278.37

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Solution

The fourth proportional to 552.20, 828.53 and 278.37 is: 417.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.20 : 828.53 = 278.37 : x
  2. Step 2: Convert to fraction form
    552.20/828.53 = 278.37/x
  3. Step 3: Cross multiply
    552.20x = 828.53 × 278.37
  4. Step 4: Simplify right side
    552.20x = 230,637.90
  5. Step 5: Solve for x
    x = 230,637.90/552.20
  6. Step 6: Final answer
    x = 417.67

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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.