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Finding the Fourth Proportional to 626.90, 941.07 and 435.38

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Solution

The fourth proportional to 626.90, 941.07 and 435.38 is: 653.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.90 : 941.07 = 435.38 : x
  2. Step 2: Convert to fraction form
    626.90/941.07 = 435.38/x
  3. Step 3: Cross multiply
    626.90x = 941.07 × 435.38
  4. Step 4: Simplify right side
    626.90x = 409,723.06
  5. Step 5: Solve for x
    x = 409,723.06/626.90
  6. Step 6: Final answer
    x = 653.57

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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.