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Finding the Fourth Proportional to 650.99, 976.40 and 261.03

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Solution

The fourth proportional to 650.99, 976.40 and 261.03 is: 391.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.99 : 976.40 = 261.03 : x
  2. Step 2: Convert to fraction form
    650.99/976.40 = 261.03/x
  3. Step 3: Cross multiply
    650.99x = 976.40 × 261.03
  4. Step 4: Simplify right side
    650.99x = 254,868.39
  5. Step 5: Solve for x
    x = 254,868.39/650.99
  6. Step 6: Final answer
    x = 391.51

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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.