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Finding the Fourth Proportional to 627.40, 941.22 and 353.26

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Solution

The fourth proportional to 627.40, 941.22 and 353.26 is: 529.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.40 : 941.22 = 353.26 : x
  2. Step 2: Convert to fraction form
    627.40/941.22 = 353.26/x
  3. Step 3: Cross multiply
    627.40x = 941.22 × 353.26
  4. Step 4: Simplify right side
    627.40x = 332,495.38
  5. Step 5: Solve for x
    x = 332,495.38/627.40
  6. Step 6: Final answer
    x = 529.96

Related Problems

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Double scale
Find fourth proportional to 628.40, 942.72 and 354.26
Similar ratio
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1.5x scale

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.