Home / 627.06-939.39-380.34

Finding the Fourth Proportional to 627.06, 939.39 and 380.34

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Solution

The fourth proportional to 627.06, 939.39 and 380.34 is: 569.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.06 : 939.39 = 380.34 : x
  2. Step 2: Convert to fraction form
    627.06/939.39 = 380.34/x
  3. Step 3: Cross multiply
    627.06x = 939.39 × 380.34
  4. Step 4: Simplify right side
    627.06x = 357,287.38
  5. Step 5: Solve for x
    x = 357,287.38/627.06
  6. Step 6: Final answer
    x = 569.78

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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.