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Finding the Fourth Proportional to 435.22, 650.43 and 318.33

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Solution

The fourth proportional to 435.22, 650.43 and 318.33 is: 475.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.22 : 650.43 = 318.33 : x
  2. Step 2: Convert to fraction form
    435.22/650.43 = 318.33/x
  3. Step 3: Cross multiply
    435.22x = 650.43 × 318.33
  4. Step 4: Simplify right side
    435.22x = 207,048.16
  5. Step 5: Solve for x
    x = 207,048.16/435.22
  6. Step 6: Final answer
    x = 475.74

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.