Home / 627.01-865.35-378.34

Finding the Fourth Proportional to 627.01, 865.35 and 378.34

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Solution

The fourth proportional to 627.01, 865.35 and 378.34 is: 522.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.01 : 865.35 = 378.34 : x
  2. Step 2: Convert to fraction form
    627.01/865.35 = 378.34/x
  3. Step 3: Cross multiply
    627.01x = 865.35 × 378.34
  4. Step 4: Simplify right side
    627.01x = 327,394.36
  5. Step 5: Solve for x
    x = 327,394.36/627.01
  6. Step 6: Final answer
    x = 522.15

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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.