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Finding the Fourth Proportional to 626.72, 943.74 and 454.59

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Solution

The fourth proportional to 626.72, 943.74 and 454.59 is: 684.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.72 : 943.74 = 454.59 : x
  2. Step 2: Convert to fraction form
    626.72/943.74 = 454.59/x
  3. Step 3: Cross multiply
    626.72x = 943.74 × 454.59
  4. Step 4: Simplify right side
    626.72x = 429,014.77
  5. Step 5: Solve for x
    x = 429,014.77/626.72
  6. Step 6: Final answer
    x = 684.55

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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.