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Finding the Fourth Proportional to 627.63, 941.78 and 353.74

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Solution

The fourth proportional to 627.63, 941.78 and 353.74 is: 530.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.63 : 941.78 = 353.74 : x
  2. Step 2: Convert to fraction form
    627.63/941.78 = 353.74/x
  3. Step 3: Cross multiply
    627.63x = 941.78 × 353.74
  4. Step 4: Simplify right side
    627.63x = 333,145.26
  5. Step 5: Solve for x
    x = 333,145.26/627.63
  6. Step 6: Final answer
    x = 530.80

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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.