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Finding the Fourth Proportional to 627.65, 936.97 and 545.64

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Solution

The fourth proportional to 627.65, 936.97 and 545.64 is: 814.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.65 : 936.97 = 545.64 : x
  2. Step 2: Convert to fraction form
    627.65/936.97 = 545.64/x
  3. Step 3: Cross multiply
    627.65x = 936.97 × 545.64
  4. Step 4: Simplify right side
    627.65x = 511,243.43
  5. Step 5: Solve for x
    x = 511,243.43/627.65
  6. Step 6: Final answer
    x = 814.54

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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.