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Finding the Fourth Proportional to 626.11, 863.63 and 377.51

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Solution

The fourth proportional to 626.11, 863.63 and 377.51 is: 520.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.11 : 863.63 = 377.51 : x
  2. Step 2: Convert to fraction form
    626.11/863.63 = 377.51/x
  3. Step 3: Cross multiply
    626.11x = 863.63 × 377.51
  4. Step 4: Simplify right side
    626.11x = 326,024.17
  5. Step 5: Solve for x
    x = 326,024.17/626.11
  6. Step 6: Final answer
    x = 520.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.