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Finding the Fourth Proportional to 552.50, 828.04 and 422.02

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Solution

The fourth proportional to 552.50, 828.04 and 422.02 is: 632.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.50 : 828.04 = 422.02 : x
  2. Step 2: Convert to fraction form
    552.50/828.04 = 422.02/x
  3. Step 3: Cross multiply
    552.50x = 828.04 × 422.02
  4. Step 4: Simplify right side
    552.50x = 349,449.44
  5. Step 5: Solve for x
    x = 349,449.44/552.50
  6. Step 6: Final answer
    x = 632.49

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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.