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Finding the Fourth Proportional to 636.54, 951.44 and 553.62

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Solution

The fourth proportional to 636.54, 951.44 and 553.62 is: 827.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.54 : 951.44 = 553.62 : x
  2. Step 2: Convert to fraction form
    636.54/951.44 = 553.62/x
  3. Step 3: Cross multiply
    636.54x = 951.44 × 553.62
  4. Step 4: Simplify right side
    636.54x = 526,736.21
  5. Step 5: Solve for x
    x = 526,736.21/636.54
  6. Step 6: Final answer
    x = 827.50

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.