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Finding the Fourth Proportional to 628.62, 949.61 and 623.22

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Solution

The fourth proportional to 628.62, 949.61 and 623.22 is: 941.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.62 : 949.61 = 623.22 : x
  2. Step 2: Convert to fraction form
    628.62/949.61 = 623.22/x
  3. Step 3: Cross multiply
    628.62x = 949.61 × 623.22
  4. Step 4: Simplify right side
    628.62x = 591,812.83
  5. Step 5: Solve for x
    x = 591,812.83/628.62
  6. Step 6: Final answer
    x = 941.45

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.