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Finding the Fourth Proportional to 636.00, 877.73 and 356.26

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Solution

The fourth proportional to 636.00, 877.73 and 356.26 is: 491.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.00 : 877.73 = 356.26 : x
  2. Step 2: Convert to fraction form
    636.00/877.73 = 356.26/x
  3. Step 3: Cross multiply
    636.00x = 877.73 × 356.26
  4. Step 4: Simplify right side
    636.00x = 312,701.39
  5. Step 5: Solve for x
    x = 312,701.39/636.00
  6. Step 6: Final answer
    x = 491.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.