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Finding the Fourth Proportional to 651.40, 976.39 and 376.92

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Solution

The fourth proportional to 651.40, 976.39 and 376.92 is: 564.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.40 : 976.39 = 376.92 : x
  2. Step 2: Convert to fraction form
    651.40/976.39 = 376.92/x
  3. Step 3: Cross multiply
    651.40x = 976.39 × 376.92
  4. Step 4: Simplify right side
    651.40x = 368,020.92
  5. Step 5: Solve for x
    x = 368,020.92/651.40
  6. Step 6: Final answer
    x = 564.97

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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.