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Finding the Fourth Proportional to 650.66, 975.86 and 445.19

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Solution

The fourth proportional to 650.66, 975.86 and 445.19 is: 667.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.66 : 975.86 = 445.19 : x
  2. Step 2: Convert to fraction form
    650.66/975.86 = 445.19/x
  3. Step 3: Cross multiply
    650.66x = 975.86 × 445.19
  4. Step 4: Simplify right side
    650.66x = 434,440.89
  5. Step 5: Solve for x
    x = 434,440.89/650.66
  6. Step 6: Final answer
    x = 667.69

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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.