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Finding the Fourth Proportional to 627.72, 942.66 and 435.48

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Solution

The fourth proportional to 627.72, 942.66 and 435.48 is: 653.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.72 : 942.66 = 435.48 : x
  2. Step 2: Convert to fraction form
    627.72/942.66 = 435.48/x
  3. Step 3: Cross multiply
    627.72x = 942.66 × 435.48
  4. Step 4: Simplify right side
    627.72x = 410,509.58
  5. Step 5: Solve for x
    x = 410,509.58/627.72
  6. Step 6: Final answer
    x = 653.97

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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.