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Finding the Fourth Proportional to 646.08, 969.09 and 275.73

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Solution

The fourth proportional to 646.08, 969.09 and 275.73 is: 413.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    646.08 : 969.09 = 275.73 : x
  2. Step 2: Convert to fraction form
    646.08/969.09 = 275.73/x
  3. Step 3: Cross multiply
    646.08x = 969.09 × 275.73
  4. Step 4: Simplify right side
    646.08x = 267,203.38
  5. Step 5: Solve for x
    x = 267,203.38/646.08
  6. Step 6: Final answer
    x = 413.58

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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.