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Finding the Fourth Proportional to 627.66, 936.99 and 545.67

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Solution

The fourth proportional to 627.66, 936.99 and 545.67 is: 814.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.66 : 936.99 = 545.67 : x
  2. Step 2: Convert to fraction form
    627.66/936.99 = 545.67/x
  3. Step 3: Cross multiply
    627.66x = 936.99 × 545.67
  4. Step 4: Simplify right side
    627.66x = 511,287.33
  5. Step 5: Solve for x
    x = 511,287.33/627.66
  6. Step 6: Final answer
    x = 814.59

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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.