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Finding the Fourth Proportional to 636.95, 880.52 and 571.34

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Solution

The fourth proportional to 636.95, 880.52 and 571.34 is: 789.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.95 : 880.52 = 571.34 : x
  2. Step 2: Convert to fraction form
    636.95/880.52 = 571.34/x
  3. Step 3: Cross multiply
    636.95x = 880.52 × 571.34
  4. Step 4: Simplify right side
    636.95x = 503,069.04
  5. Step 5: Solve for x
    x = 503,069.04/636.95
  6. Step 6: Final answer
    x = 789.82

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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.