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Finding the Fourth Proportional to 636.73, 879.59 and 526.16

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Solution

The fourth proportional to 636.73, 879.59 and 526.16 is: 726.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.73 : 879.59 = 526.16 : x
  2. Step 2: Convert to fraction form
    636.73/879.59 = 526.16/x
  3. Step 3: Cross multiply
    636.73x = 879.59 × 526.16
  4. Step 4: Simplify right side
    636.73x = 462,808.59
  5. Step 5: Solve for x
    x = 462,808.59/636.73
  6. Step 6: Final answer
    x = 726.86

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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.