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Finding the Fourth Proportional to 626.58, 864.77 and 377.87

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Solution

The fourth proportional to 626.58, 864.77 and 377.87 is: 521.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.58 : 864.77 = 377.87 : x
  2. Step 2: Convert to fraction form
    626.58/864.77 = 377.87/x
  3. Step 3: Cross multiply
    626.58x = 864.77 × 377.87
  4. Step 4: Simplify right side
    626.58x = 326,764.43
  5. Step 5: Solve for x
    x = 326,764.43/626.58
  6. Step 6: Final answer
    x = 521.50

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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.