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Finding the Fourth Proportional to 651.85, 976.39 and 605.38

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Solution

The fourth proportional to 651.85, 976.39 and 605.38 is: 906.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.85 : 976.39 = 605.38 : x
  2. Step 2: Convert to fraction form
    651.85/976.39 = 605.38/x
  3. Step 3: Cross multiply
    651.85x = 976.39 × 605.38
  4. Step 4: Simplify right side
    651.85x = 591,086.98
  5. Step 5: Solve for x
    x = 591,086.98/651.85
  6. Step 6: Final answer
    x = 906.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.