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Finding the Fourth Proportional to 552.52, 827.70 and 278.28

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Solution

The fourth proportional to 552.52, 827.70 and 278.28 is: 416.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.52 : 827.70 = 278.28 : x
  2. Step 2: Convert to fraction form
    552.52/827.70 = 278.28/x
  3. Step 3: Cross multiply
    552.52x = 827.70 × 278.28
  4. Step 4: Simplify right side
    552.52x = 230,332.36
  5. Step 5: Solve for x
    x = 230,332.36/552.52
  6. Step 6: Final answer
    x = 416.88

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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.