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Finding the Fourth Proportional to 650.21, 975.81 and 239.61

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Solution

The fourth proportional to 650.21, 975.81 and 239.61 is: 359.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.21 : 975.81 = 239.61 : x
  2. Step 2: Convert to fraction form
    650.21/975.81 = 239.61/x
  3. Step 3: Cross multiply
    650.21x = 975.81 × 239.61
  4. Step 4: Simplify right side
    650.21x = 233,813.83
  5. Step 5: Solve for x
    x = 233,813.83/650.21
  6. Step 6: Final answer
    x = 359.60

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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.