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Finding the Fourth Proportional to 435.46, 656.21 and 394.46

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Solution

The fourth proportional to 435.46, 656.21 and 394.46 is: 594.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.46 : 656.21 = 394.46 : x
  2. Step 2: Convert to fraction form
    435.46/656.21 = 394.46/x
  3. Step 3: Cross multiply
    435.46x = 656.21 × 394.46
  4. Step 4: Simplify right side
    435.46x = 258,848.60
  5. Step 5: Solve for x
    x = 258,848.60/435.46
  6. Step 6: Final answer
    x = 594.43

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.