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Finding the Fourth Proportional to 626.70, 936.38 and 529.50

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Solution

The fourth proportional to 626.70, 936.38 and 529.50 is: 791.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.70 : 936.38 = 529.50 : x
  2. Step 2: Convert to fraction form
    626.70/936.38 = 529.50/x
  3. Step 3: Cross multiply
    626.70x = 936.38 × 529.50
  4. Step 4: Simplify right side
    626.70x = 495,813.21
  5. Step 5: Solve for x
    x = 495,813.21/626.70
  6. Step 6: Final answer
    x = 791.15

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.