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Finding the Fourth Proportional to 552.44, 828.96 and 415.40

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Solution

The fourth proportional to 552.44, 828.96 and 415.40 is: 623.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.44 : 828.96 = 415.40 : x
  2. Step 2: Convert to fraction form
    552.44/828.96 = 415.40/x
  3. Step 3: Cross multiply
    552.44x = 828.96 × 415.40
  4. Step 4: Simplify right side
    552.44x = 344,349.98
  5. Step 5: Solve for x
    x = 344,349.98/552.44
  6. Step 6: Final answer
    x = 623.33

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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.