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Finding the Fourth Proportional to 651.05, 971.94 and 628.27

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Solution

The fourth proportional to 651.05, 971.94 and 628.27 is: 937.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.05 : 971.94 = 628.27 : x
  2. Step 2: Convert to fraction form
    651.05/971.94 = 628.27/x
  3. Step 3: Cross multiply
    651.05x = 971.94 × 628.27
  4. Step 4: Simplify right side
    651.05x = 610,640.74
  5. Step 5: Solve for x
    x = 610,640.74/651.05
  6. Step 6: Final answer
    x = 937.93

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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.