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Finding the Fourth Proportional to 552.64, 827.68 and 425.12

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Solution

The fourth proportional to 552.64, 827.68 and 425.12 is: 636.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.64 : 827.68 = 425.12 : x
  2. Step 2: Convert to fraction form
    552.64/827.68 = 425.12/x
  3. Step 3: Cross multiply
    552.64x = 827.68 × 425.12
  4. Step 4: Simplify right side
    552.64x = 351,863.32
  5. Step 5: Solve for x
    x = 351,863.32/552.64
  6. Step 6: Final answer
    x = 636.70

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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.