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Finding the Fourth Proportional to 435.11, 600.65 and 330.21

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Solution

The fourth proportional to 435.11, 600.65 and 330.21 is: 455.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.11 : 600.65 = 330.21 : x
  2. Step 2: Convert to fraction form
    435.11/600.65 = 330.21/x
  3. Step 3: Cross multiply
    435.11x = 600.65 × 330.21
  4. Step 4: Simplify right side
    435.11x = 198,340.22
  5. Step 5: Solve for x
    x = 198,340.22/435.11
  6. Step 6: Final answer
    x = 455.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.